/usr/local/ssl/openssl.cnf
This is a local installation. You downloaded and built OpenSSL taking the default prefix
, of you configured with ./config --prefix=/usr/local/ssl
or ./config --openssldir=/usr/local/ssl
.
You will use this if you use the OpenSSL in /usr/local/ssl/bin
. That is, /usr/local/ssl/openssl.cnf
will be used when you issue:
/usr/local/ssl/bin/openssl s_client -connect localhost:443 -tls1 -servername localhost
/usr/lib/ssl/openssl.cnf
This is where Ubuntu places openssl.cnf
for the OpenSSL they provide.
You will use this if you use the OpenSSL in /usr/bin
. That is, /usr/lib/ssl/openssl.cnf
will be used when you issue:
openssl s_client -connect localhost:443 -tls1 -servername localhost
/etc/ssl/openssl.cnf
I don't know when this is used. The stuff in /etc/ssl
is usually certificates and private keys, and it sometimes contains a copy of openssl.cnf
. But I've never seen it used for anything.
Which is the main/correct one that I should use to make changes?
From the sounds of it, you should probably add the engine to /usr/lib/ssl/openssl.cnf
. That ensures most "off the shelf" gear will use the new engine.
After you do that, add it to /usr/local/ssl/openssl.cnf
also because copy/paste is easy.
Here's how to see which openssl.cnf
directory is associated with a OpenSSL installation. The library and programs look for openssl.cnf
in OPENSSLDIR
. OPENSSLDIR
is a configure option, and its set with --openssldir
.
I'm on a MacBook with 3 different OpenSSL's (Apple's, MacPort's and the one I build):
# Apple
$ /usr/bin/openssl version -a | grep OPENSSLDIR
OPENSSLDIR: "/System/Library/OpenSSL"
# MacPorts
$ /opt/local/bin/openssl version -a | grep OPENSSLDIR
OPENSSLDIR: "/opt/local/etc/openssl"
# My build of OpenSSL
$ openssl version -a | grep OPENSSLDIR
OPENSSLDIR: "/usr/local/ssl/darwin"
I have an Ubuntu system and I have installed openssl.
Just bike shedding, but be careful of Ubuntu's version of OpenSSL. It disables TLSv1.1 and TLSv1.2, so you will only have clients capable of older cipher suites; and you will not be able to use newer ciphers like AES/CTR (to replace RC4) and elliptic curve gear (like ECDHE_ECDSA_*
and ECDHE_RSA_*
). See Ubuntu 12.04 LTS: OpenSSL downlevel version is 1.0.0, and does not support TLS 1.2 in Launchpad.
EDIT: Ubuntu enabled TLS 1.1 and TLS 1.2 recently. See Comment 17 on the bug report.
yes It is possible.. returns type can be different only if parent class method return type is
a super type of child class method return type..
means
class ParentClass {
public Circle() method1() {
return new Cirlce();
}
}
class ChildClass extends ParentClass {
public Square method1() {
return new Square();
}
}
Class Circle {
}
class Square extends Circle {
}
if re.match(regex, content):
blah..
You could also use re.search
depending on how you want it to match.
I've had nice results with djb2
by Dan Bernstein.
unsigned long
hash(unsigned char *str)
{
unsigned long hash = 5381;
int c;
while (c = *str++)
hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
return hash;
}
You have a JSON Lines format text file. You need to parse your file line by line:
import json
data = []
with open('file') as f:
for line in f:
data.append(json.loads(line))
Each line contains valid JSON, but as a whole, it is not a valid JSON value as there is no top-level list or object definition.
Note that because the file contains JSON per line, you are saved the headaches of trying to parse it all in one go or to figure out a streaming JSON parser. You can now opt to process each line separately before moving on to the next, saving memory in the process. You probably don't want to append each result to one list and then process everything if your file is really big.
If you have a file containing individual JSON objects with delimiters in-between, use How do I use the 'json' module to read in one JSON object at a time? to parse out individual objects using a buffered method.
Ruslik's suggestion to use source generation seems like a good thing to me. However, I wouldn't go with the concept of "main" and "generated" source files. I'd rather have one file with code almost identical to yours:
h=_myhash (mystring);
switch (h)
{
case 66452: // = hash("Vasia")
.......
case 1342537: // = hash("Petya")
........
}
The next thing I'd do, I'd write a simple script. Perl is good for such kind of things, but nothing stops you even from writing a simple program in C/C++ if you don't want to use any other languages. This script, or program, would take the source file, read it line-by-line, find all those case NUMBERS: // = hash("SOMESTRING")
lines (use regular expressions here), replace NUMBERS with the actual hash value and write the modified source into a temporary file. Finally, it would back up the source file and replace it with the temporary file. If you don't want your source file to have a new time stamp each time, the program could check if something was actually changed and if not, skip the file replacement.
The last thing to do is to integrate this script into the build system used, so you won't accidentally forget to launch it before building the project.
Do which sshpass
in your command line to get the absolute path to sshpass
and replace it in the bash script.
You should also probably do the same with the command
you are trying to run.
The problem might be that it is not finding it.
You may be interested in using a ORM like Mongoid or MongoMapper.
http://mongoid.org/docs/relations/referenced/1-n.html
In a NoSQL database like MongoDB there are not 'tables' but collections. Documents are grouped inside Collections. You can have any kind of document – with any kind of data – in a single collection. Basically, in a NoSQL database it is up to you to decide how to organise the data and its relations, if there are any.
What Mongoid and MongoMapper do is to provide you with convenient methods to set up relations quite easily. Check out the link I gave you and ask any thing.
Edit:
In mongoid you will write your scheme like this:
class Student
include Mongoid::Document
field :name
embeds_many :addresses
embeds_many :scores
end
class Address
include Mongoid::Document
field :address
field :city
field :state
field :postalCode
embedded_in :student
end
class Score
include Mongoid::Document
belongs_to :course
field :grade, type: Float
embedded_in :student
end
class Course
include Mongoid::Document
field :name
has_many :scores
end
Edit:
> db.foo.insert({group:"phones"})
> db.foo.find()
{ "_id" : ObjectId("4df6539ae90592692ccc9940"), "group" : "phones" }
{ "_id" : ObjectId("4df6540fe90592692ccc9941"), "group" : "phones" }
>db.foo.find({'_id':ObjectId("4df6539ae90592692ccc9940")})
{ "_id" : ObjectId("4df6539ae90592692ccc9940"), "group" : "phones" }
You can use that ObjectId in order to do relations between documents.
For others on this page wondering what the correct syntax is (as did I) for explicit template specialisation (or at least in VS2008), its the following...
In your .h file...
template<typename T>
class foo
{
public:
void bar(const T &t);
};
And in your .cpp file
template <class T>
void foo<T>::bar(const T &t)
{ }
// Explicit template instantiation
template class foo<int>;
file --mime works, but not --mime-type. at least for my RHEL 5.
To build on Anton's answer a little --
angular.module("app").directive("onlyDigits", function ()
{
return {
restrict: 'EA',
require: '?ngModel',
scope:{
allowDecimal: '@',
allowNegative: '@',
minNum: '@',
maxNum: '@'
},
link: function (scope, element, attrs, ngModel)
{
if (!ngModel) return;
ngModel.$parsers.unshift(function (inputValue)
{
var decimalFound = false;
var digits = inputValue.split('').filter(function (s,i)
{
var b = (!isNaN(s) && s != ' ');
if (!b && attrs.allowDecimal && attrs.allowDecimal == "true")
{
if (s == "." && decimalFound == false)
{
decimalFound = true;
b = true;
}
}
if (!b && attrs.allowNegative && attrs.allowNegative == "true")
{
b = (s == '-' && i == 0);
}
return b;
}).join('');
if (attrs.maxNum && !isNaN(attrs.maxNum) && parseFloat(digits) > parseFloat(attrs.maxNum))
{
digits = attrs.maxNum;
}
if (attrs.minNum && !isNaN(attrs.minNum) && parseFloat(digits) < parseFloat(attrs.minNum))
{
digits = attrs.minNum;
}
ngModel.$viewValue = digits;
ngModel.$render();
return digits;
});
}
};
});
Example: index = False
import pandas as pd
writer = pd.ExcelWriter("dataframe.xlsx", engine='xlsxwriter')
dataframe.to_excel(writer,sheet_name = dataframe, index=False)
writer.save()
I don't know if/where it's published, but you can get the latest release by omitting the minor and build numbers.
Latest 1.8.x:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8/jquery.min.js"></script>
Latest 1.x:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
However, do keep in mind that these links have a much shorter cache timeout than with the full version number, so your users may be downloading them more than you'd like. See The crucial .0 in Google CDN references to jQuery 1.x.0 for more information.
This is Oracle bug, memory leak in shared_pool, most likely db managing lots of partitions. Solution: In my opinion patch not exists, check with oracle support. You can try with subpools or en(de)able AMM ...
You need to chain the method like this:
$('#input').val('test').change();
To check if a string variable contains a valid email address, the easiest way is to test it against a regular expression. There is a good discussion of various regex's and their trade-offs at regular-expressions.info.
Here is a relatively simple one that leans on the side of allowing some invalid addresses through: ^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,6}$
How you can use regular expressions depends on the version of iOS you are using.
You can use NSRegularExpression
, which allows you to compile and test against a regular expression directly.
Does not include the NSRegularExpression
class, but does include NSPredicate
, which can match against regular expressions.
NSString *emailRegex = ...;
NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex];
BOOL isValid = [emailTest evaluateWithObject:checkString];
Read a full article about this approach at cocoawithlove.com.
Does not include any regular expression matching in the Cocoa libraries. However, you can easily include RegexKit Lite in your project, which gives you access to the C-level regex APIs included on iOS 2.0.
You have to install mingw-get and after that you can run mingw-get install msys-make
to have the command make available.
Here is a link for what you want http://www.mingw.org/wiki/getting_started
{
void *mem = malloc(1024+16);
void *ptr = ((char *)mem+16) & ~ 0x0F;
memset_16aligned(ptr, 0, 1024);
free(mem);
}
{
void *mem = malloc(1024+15);
void *ptr = ((uintptr_t)mem+15) & ~ (uintptr_t)0x0F;
memset_16aligned(ptr, 0, 1024);
free(mem);
}
The first step is to allocate enough spare space, just in case. Since the memory must be 16-byte aligned (meaning that the leading byte address needs to be a multiple of 16), adding 16 extra bytes guarantees that we have enough space. Somewhere in the first 16 bytes, there is a 16-byte aligned pointer. (Note that malloc()
is supposed to return a pointer that is sufficiently well aligned for any purpose. However, the meaning of 'any' is primarily for things like basic types — long
, double
, long double
, long long
, and pointers to objects and pointers to functions. When you are doing more specialized things, like playing with graphics systems, they can need more stringent alignment than the rest of the system — hence questions and answers like this.)
The next step is to convert the void pointer to a char pointer; GCC notwithstanding, you are not supposed to do pointer arithmetic on void pointers (and GCC has warning options to tell you when you abuse it). Then add 16 to the start pointer. Suppose malloc()
returned you an impossibly badly aligned pointer: 0x800001. Adding the 16 gives 0x800011. Now I want to round down to the 16-byte boundary — so I want to reset the last 4 bits to 0. 0x0F has the last 4 bits set to one; therefore, ~0x0F
has all bits set to one except the last four. Anding that with 0x800011 gives 0x800010. You can iterate over the other offsets and see that the same arithmetic works.
The last step, free()
, is easy: you always, and only, return to free()
a value that one of malloc()
, calloc()
or realloc()
returned to you — anything else is a disaster. You correctly provided mem
to hold that value — thank you. The free releases it.
Finally, if you know about the internals of your system's malloc
package, you could guess that it might well return 16-byte aligned data (or it might be 8-byte aligned). If it was 16-byte aligned, then you'd not need to dink with the values. However, this is dodgy and non-portable — other malloc
packages have different minimum alignments, and therefore assuming one thing when it does something different would lead to core dumps. Within broad limits, this solution is portable.
Someone else mentioned posix_memalign()
as another way to get the aligned memory; that isn't available everywhere, but could often be implemented using this as a basis. Note that it was convenient that the alignment was a power of 2; other alignments are messier.
One more comment — this code does not check that the allocation succeeded.
Windows Programmer pointed out that you can't do bit mask operations on pointers, and, indeed, GCC (3.4.6 and 4.3.1 tested) does complain like that. So, an amended version of the basic code — converted into a main program, follows. I've also taken the liberty of adding just 15 instead of 16, as has been pointed out. I'm using uintptr_t
since C99 has been around long enough to be accessible on most platforms. If it wasn't for the use of PRIXPTR
in the printf()
statements, it would be sufficient to #include <stdint.h>
instead of using #include <inttypes.h>
. [This code includes the fix pointed out by C.R., which was reiterating a point first made by Bill K a number of years ago, which I managed to overlook until now.]
#include <assert.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void memset_16aligned(void *space, char byte, size_t nbytes)
{
assert((nbytes & 0x0F) == 0);
assert(((uintptr_t)space & 0x0F) == 0);
memset(space, byte, nbytes); // Not a custom implementation of memset()
}
int main(void)
{
void *mem = malloc(1024+15);
void *ptr = (void *)(((uintptr_t)mem+15) & ~ (uintptr_t)0x0F);
printf("0x%08" PRIXPTR ", 0x%08" PRIXPTR "\n", (uintptr_t)mem, (uintptr_t)ptr);
memset_16aligned(ptr, 0, 1024);
free(mem);
return(0);
}
And here is a marginally more generalized version, which will work for sizes which are a power of 2:
#include <assert.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void memset_16aligned(void *space, char byte, size_t nbytes)
{
assert((nbytes & 0x0F) == 0);
assert(((uintptr_t)space & 0x0F) == 0);
memset(space, byte, nbytes); // Not a custom implementation of memset()
}
static void test_mask(size_t align)
{
uintptr_t mask = ~(uintptr_t)(align - 1);
void *mem = malloc(1024+align-1);
void *ptr = (void *)(((uintptr_t)mem+align-1) & mask);
assert((align & (align - 1)) == 0);
printf("0x%08" PRIXPTR ", 0x%08" PRIXPTR "\n", (uintptr_t)mem, (uintptr_t)ptr);
memset_16aligned(ptr, 0, 1024);
free(mem);
}
int main(void)
{
test_mask(16);
test_mask(32);
test_mask(64);
test_mask(128);
return(0);
}
To convert test_mask()
into a general purpose allocation function, the single return value from the allocator would have to encode the release address, as several people have indicated in their answers.
Uri commented: Maybe I am having [a] reading comprehension problem this morning, but if the interview question specifically says: "How would you allocate 1024 bytes of memory" and you clearly allocate more than that. Wouldn't that be an automatic failure from the interviewer?
My response won't fit into a 300-character comment...
It depends, I suppose. I think most people (including me) took the question to mean "How would you allocate a space in which 1024 bytes of data can be stored, and where the base address is a multiple of 16 bytes". If the interviewer really meant how can you allocate 1024 bytes (only) and have it 16-byte aligned, then the options are more limited.
However, if the interviewer expected either of those responses, I'd expect them to recognize that this solution answers a closely related question, and then to reframe their question to point the conversation in the correct direction. (Further, if the interviewer got really stroppy, then I wouldn't want the job; if the answer to an insufficiently precise requirement is shot down in flames without correction, then the interviewer is not someone for whom it is safe to work.)
The title of the question has changed recently. It was Solve the memory alignment in C interview question that stumped me. The revised title (How to allocate aligned memory only using the standard library?) demands a slightly revised answer — this addendum provides it.
C11 (ISO/IEC 9899:2011) added function aligned_alloc()
:
7.22.3.1 The
aligned_alloc
functionSynopsis
#include <stdlib.h> void *aligned_alloc(size_t alignment, size_t size);
Description
Thealigned_alloc
function allocates space for an object whose alignment is specified byalignment
, whose size is specified bysize
, and whose value is indeterminate. The value ofalignment
shall be a valid alignment supported by the implementation and the value ofsize
shall be an integral multiple ofalignment
.Returns
Thealigned_alloc
function returns either a null pointer or a pointer to the allocated space.
And POSIX defines posix_memalign()
:
#include <stdlib.h> int posix_memalign(void **memptr, size_t alignment, size_t size);
DESCRIPTION
The
posix_memalign()
function shall allocatesize
bytes aligned on a boundary specified byalignment
, and shall return a pointer to the allocated memory inmemptr
. The value ofalignment
shall be a power of two multiple ofsizeof(void *)
.Upon successful completion, the value pointed to by
memptr
shall be a multiple ofalignment
.If the size of the space requested is 0, the behavior is implementation-defined; the value returned in
memptr
shall be either a null pointer or a unique pointer.The
free()
function shall deallocate memory that has previously been allocated byposix_memalign()
.RETURN VALUE
Upon successful completion,
posix_memalign()
shall return zero; otherwise, an error number shall be returned to indicate the error.
Either or both of these could be used to answer the question now, but only the POSIX function was an option when the question was originally answered.
Behind the scenes, the new aligned memory function do much the same job as outlined in the question, except they have the ability to force the alignment more easily, and keep track of the start of the aligned memory internally so that the code doesn't have to deal with specially — it just frees the memory returned by the allocation function that was used.
I got this error message with vs2015, ssdt 14.1.xxx, ssrs. For me I think it was something different than described above with a 2 column, same name problem. I added this report, then deleted the report, then when I tried to add the query back in the ssrs wizard I got this message, " An error occurred while the query design method was being saved :invalid object name: tablename" . where tablename was the table on the query the wizard was reading. I tried cleaning the project, I tried rebuilding the project. In my opinion Microsoft isn't completing cleaning out the report when you delete it and as long as you try to add the original query back it won't add. The way I was able to fix it was to create the ssrs report in a whole new project (obviously nothing wrong with the query) and save it off to the side. Then I reopened my original ssrs project, right clicked on Reports, then Add, then add Existing Item. The report added back in just fine with no name conflict.
You could do something like this:
\documentclass{article}
\begin{document}
Normal:
\begin{itemize}
\item foo
\item bar
\item baz
\end{itemize}
Less space:
\begin{itemize}
\setlength{\itemsep}{1pt}
\setlength{\parskip}{0pt}
\setlength{\parsep}{0pt}
\item foo
\item bar
\item baz
\end{itemize}
\end{document}
Attempting to provide some (possible) context for OP's question by posting my own trouble. I'm working in Scala, but the error messages I'm getting all reference Java types, and the error message reads a lot like the compiler complaining that CharSequence is not a String. I confirmed in the source code that String implements the CharSequence interface, but the error message draws attention to the difference between String and CharSequence while hiding the real source of the trouble:
scala> cols
res8: Iterable[String] = List(Item, a, b)
scala> val header = String.join(",", cols)
<console>:13: error: overloaded method value join with alternatives:
(x$1: CharSequence,x$2: java.lang.Iterable[_ <: CharSequence])String <and>
(x$1: CharSequence,x$2: CharSequence*)String
cannot be applied to (String, Iterable[String])
val header = String.join(",", cols)
I was able to fix this problem with the realization that the problem wasn't String / CharSequence, but rather a mismatch between java.lang.Iterable and Scala's built-in Iterable.
scala> val header = String.join(",", coll: _*)
header: String = Item,a,b
My particular problem can also be solved via the answers at Scala: join an iterable of strings
In summary, OP and others who come across similar problems should parse the error messages very closely and see what other type conversions might be involved.
I like to use this simple solution:
var myString = "test";
if(myString.constructor === String)
{
//It's a string
}
In addition to Alexis C's answer, If you are working with an array list, in which you are not sure whether the element you are searching for exists, use this.
Integer a = list.stream()
.peek(num -> System.out.println("will filter " + num))
.filter(x -> x > 5)
.findFirst()
.orElse(null);
Then you could simply check whether a is null
.
Splitting it looks like the best option in to me:
'1111342=Adam%20Franco&348572=Bob%20Jones'.split('&').map(x => x.match(/(?:&|&)?([^=]+)=([^&]+)/))
Is there some simple equivalent to this keyword in C++?
No.
Depending on what you're trying to accomplish, there might be adequate (or even better) substitutes.
I've looked through some STL code (on linux, I think it's the one deriving from SGI's implementation). It has "concept assertions"; for instance, if you require a type which understands *x
and ++x
, the concept assertion would contain that code in a do-nothing function (or something similar). It does require some overhead, so it might be smart to put it in a macro whose definition depends on #ifdef debug
.
If the subclass relationship is really what you want to know about, you could assert in the constructor that T instanceof list
(except it's "spelled" differently in C++). That way, you can test your way out of the compiler not being able to check it for you.
updated 05/09/2014
OK. We have official document now. It talked all I have mentioned, in a better way.
Read more detailed here.
Yes, the main difference is surfaceView can be updated on the background thread. However, there are more you might care.
surfaceView has dedicate surface buffer while all the view shares one surface buffer that is allocated by ViewRoot. In another word, surfaceView cost more resources.
surfaceView cannot be hardware accelerated (as of JB4.2) while 95% operations on normal View are HW accelerated using openGL ES.
More work should be done to create your customized surfaceView. You need to listener to the surfaceCreated/Destroy Event, create an render thread, more importantly, synchronized the render thread and main thread. However, to customize the View, all you need to do is override onDraw
method.
view.invalidate
in the UI thread or view.postInvalid
in other thread to indicate to the framework that the view should be updated. However, the view won't be updated immediately but wait until next VSYNC event arrived. The easy approach to understand VSYNC is to consider it is as a timer that fire up every 16ms for a 60fps screen. In Android, all the normal view update (and display actually but I won't talk it today), is synchronized with VSYNC to achieve better smoothness. Now,back to the surfaceView, you can render it anytime as you wish. However, I can hardly tell if it is an advantage, since the display is also synchronized with VSYNC, as stated previously.access private members outside class ....only for study purpose .... This program accepts all the below conditions "I dont want to create member function for above class A. And also i dont want to inherit the above class A. I dont want to change the specifier of iData."
//here member function is used only to input and output the private values ... //void hack() is defined outside the class...
//GEEK MODE....;)
#include<iostream.h>
#include<conio.h>
class A
{
private :int iData,x;
public: void get() //enter the values
{cout<<"Enter iData : ";
cin>>iData;cout<<"Enter x : ";cin>>x;}
void put() //displaying values
{cout<<endl<<"sum = "<<iData+x;}
};
void hack(); //hacking function
void main()
{A obj;clrscr();
obj.get();obj.put();hack();obj.put();getch();
}
void hack() //hack begins
{int hck,*ptr=&hck;
cout<<endl<<"Enter value of private data (iData or x) : ";
cin>>hck; //enter the value assigned for iData or x
for(int i=0;i<5;i++)
{ptr++;
if(*ptr==hck)
{cout<<"Private data hacked...!!!\nChange the value : ";
cin>>*ptr;cout<<hck<<" Is chaged to : "<<*ptr;
return;}
}cout<<"Sorry value not found.....";
}
If you just want the first key from a dictionary you should use what many have suggested before
first = next(iter(prices))
However if you want the first and keep the rest as a list you could use the values unpacking operator
first, *rest = prices
The same is applicable on values by replacing prices
with prices.values()
and for both key and value you can even use unpacking assignment
>>> (product, price), *rest = prices.items()
>>> product
'banana'
>>> price
4
Note: You might be tempted to use
first, *_ = prices
to just get the first key, but I would generally advice against this usage unless the dictionary is very short since it loops over all keys and creating a list for therest
has some overhead.
Note: As mentioned by others insertion order is preserved from python 3.7 (or technically 3.6) and above whereas earlier implementations should be regarded as undefined order.
Dim f as Range
Set f=ActiveSheet.Cells.Find(...)
If Not f Is Nothing then
msgbox "Row=" & f.Row & vbcrlf & "Column=" & f.Column
Else
msgbox "value not found!"
End If
Our company has a 5 second response time standard limit, and we aim for 2-3 seconds in general. This accounts for 98% of page loads. A few particular tasks are allowed to go up to 15 seconds, but we then mitigate that time by putting up a page and refreshing every 5 seconds telling the user that we are still trying to process the request. That way the user sees that something is happening and doesn't just leave. Although, considering that I work on a website whose users are forced to use for business reasons, they aren't going to leave, but they are capable of complaining quite loudly.
In general, if the processing is going to take more than 5 seconds, put up a temporary page so that the user doesn't lose interest.
The name of the inputs must be the same to belong to the same group. Then the others will be automatically deselected when one is clicked.
Its because of wrong path provided. It may be that the url contains space and if the case url has to be properly constructed.
The correct url should be in the format with file name included like "http://server name/document library name/new file name"
So if report.xlsx is the file that has to be uploaded at "http://server name/Team/Dev Team" then path comes out to be is "http://server name/Team/Dev Team/report.xlsx". It contains space so it should be reconstructed as "http://server name/Team/Dev%20Team/report.xlsx" and should be used.
If you wish to avoid both building your projects with Bazel and generating a large binary, I have assembled a repository instructing the usage of the TensorFlow C++ library with CMake. You can find it here. The general ideas are as follows:
tensorflow/BUILD
(the provided ones do not include all of the C++ functionality).grep 'potato:' file.txt | sed 's/^.*: //'
grep
looks for any line that contains the string potato:
, then, for each of these lines, sed
replaces (s///
- substitute) any character (.*
) from the beginning of the line (^
) until the last occurrence of the sequence :
(colon followed by space) with the empty string (s/...//
- substitute the first part with the second part, which is empty).
or
grep 'potato:' file.txt | cut -d\ -f2
For each line that contains potato:
, cut
will split the line into multiple fields delimited by space (-d\
- d
= delimiter, \
= escaped space character, something like -d" "
would have also worked) and print the second field of each such line (-f2
).
or
grep 'potato:' file.txt | awk '{print $2}'
For each line that contains potato:
, awk
will print the second field (print $2
) which is delimited by default by spaces.
or
grep 'potato:' file.txt | perl -e 'for(<>){s/^.*: //;print}'
All lines that contain potato:
are sent to an inline (-e
) Perl script that takes all lines from stdin
, then, for each of these lines, does the same substitution as in the first example above, then prints it.
or
awk '{if(/potato:/) print $2}' < file.txt
The file is sent via stdin
(< file.txt
sends the contents of the file via stdin
to the command on the left) to an awk
script that, for each line that contains potato:
(if(/potato:/)
returns true if the regular expression /potato:/
matches the current line), prints the second field, as described above.
or
perl -e 'for(<>){/potato:/ && s/^.*: // && print}' < file.txt
The file is sent via stdin
(< file.txt
, see above) to a Perl script that works similarly to the one above, but this time it also makes sure each line contains the string potato:
(/potato:/
is a regular expression that matches if the current line contains potato:
, and, if it does (&&
), then proceeds to apply the regular expression described above and prints the result).
Step 1: Simply put all the required code in a "MAIN.BAT" file.
Step 2: Create another bat file, say MainCaller.bat, and just copy/paste these 3 lines of code:
REM THE MAIN FILE WILL BE CALLED FROM HERE..........
CD "File_Path_Where_Main.bat_is_located"
MAIN.BAT > log.txt
Step 3: Just double click "MainCaller.bat".
All the output will be logged into the text file named "log".
Use Convert.TryFromBase64String from C# 7.2
public static bool IsBase64String(string base64)
{
Span<byte> buffer = new Span<byte>(new byte[base64.Length]);
return Convert.TryFromBase64String(base64, buffer , out int bytesParsed);
}
In Python, paths are relative to the current working directory, which in most cases is the directory from which you run your program. The current working directory is very likely not as same as the directory of your module file, so using a path relative to your current module file is always a bad choice.
Using absolute path should be the best solution:
import os
package_dir = os.path.dirname(os.path.abspath(__file__))
thefile = os.path.join(package_dir,'test.cvs')
For those hitting this up in the future, you can now use the Mongoid::Criteria#distinct
method from Origin to select only distinct values from the database:
# Requires a Mongoid::Criteria
Attendees.all.distinct(:user_id)
Decorate the model property with the DisplayName attribute.
Use overflow-y:auto
for displaying scroll automatically when the content exceeds the divs set height.
An IFrame WILL "trigger" the spell checker (if it has content-editable set to true) just as a textfield, at least in Chrome.
To compare date time, you can try this. Datetime format can be changed
from datetime import datetime
>>> a = datetime.strptime("10/12/2013", "%m/%d/%Y")
>>> b = datetime.strptime("10/15/2013", "%m/%d/%Y")
>>> a>b
False
There are many ways to solve the same. One of the easiest ways to solve using Java 8 is given below :
As per your requirement, To sort in alphabetical order based on the map's key name
1st way :
list = list.stream()
.sorted((a,b)-> (a.get("name")).compareTo(b.get("name")))
.collect(Collectors.toList());
Or,
list = list.stream()
.sorted(Comparator.comparing(map->map.get("name")))
.collect(Collectors.toList());
2nd way :
Collections.sort(list, Comparator.comparing(map -> map.get("name")));
3rd way :
list.sort(Comparator.comparing(map-> map.get("name")));
If you are using torch you can do:
import torch.multiprocessing as mp
mp.cpu_count()
I usually don't like to guess, but I'm going to on this one...
If you remember Microsoft's .NET marketing hype back in the day (2001?), it was hard to tell what .NET even was. Was it a server? a programming platform? a language? something new entirely? Given the ads, it was ambiguously anything you wanted it to be - it just solved any problem you might have.
So, my guess is there was a hidden grand vision that ASP.NET code could run anywhere - server side OR client side, in a copy of Internet Explorer tied to the .NET runtime. runat="server" is just a vestigial remnant, left behind because it's client-side equivalent never made it to production.
Remember those weird ads?
Related: Article from The Register with some .NET history.
I have a three column table with just over 6 Billion rows in SQL Server 2008 R2.
We query it every day to create minute-by-minute system analysis charts for our customers. I have not noticed any database performance hits (though the fact that it grows ~1 GB every day does make managing backups a bit more involved than I would like).
Update July 2016
We made it to ~24.5 billion rows before backups became large enough for us to decide to truncate records older than two years (~700 GB stored in multiple backups, including on expensive tapes). It's worth noting that performance was not a significant motivator in this decision (i.e., it was still working great).
For anyone who finds themselves trying to delete 20 billion rows from SQL Server, I highly recommend this article. Relevant code in case the link dies (read the article for a full explanation):
ALTER DATABASE DeleteRecord SET RECOVERY SIMPLE;
GO
BEGIN TRY
BEGIN TRANSACTION
-- Bulk logged
SELECT *
INTO dbo.bigtable_intermediate
FROM dbo.bigtable
WHERE Id % 2 = 0;
-- minimal logged because DDL-Operation
TRUNCATE TABLE dbo.bigtable;
-- Bulk logged because target table is exclusivly locked!
SET IDENTITY_INSERT dbo.bigTable ON;
INSERT INTO dbo.bigtable WITH (TABLOCK) (Id, c1, c2, c3)
SELECT Id, c1, c2, c3 FROM dbo.bigtable_intermediate ORDER BY Id;
SET IDENTITY_INSERT dbo.bigtable OFF;
COMMIT
END TRY
BEGIN CATCH
IF @@TRANCOUNT > 0
ROLLBACK
END CATCH
ALTER DATABASE DeleteRecord SET RECOVERY FULL;
GO
Update November 2016
If you plan on storing this much data in a single table: don't. I highly recommend you consider table partitioning (either manually or with the built-in features if you're running Enterprise edition). This makes dropping old data as easy as truncating a table once a (week/month/etc.). If you don't have Enterprise (which we don't), you can simply write a script which runs once a month, drops tables older than 2 years, creates next month's table, and regenerates a dynamic view that joins all of the partition tables together for easy querying. Obviously "once a month" and "older than 2 years" should be defined by you based on what makes sense for your use-case. Deleting directly from a table with tens of billions of rows of data will a) take a HUGE amount of time and b) fill up the transaction log hundreds or thousands of times over.
You need to use a search algorithm on your array. It depends on how large is your array, you have plenty of choices on what to use. Or you can use on of the built in functions:
The cause of errors such as "Invalid application of sizeof to incomplete type with a struct ... " is always lack of an include statement. Try to find the right library to include.
Use below XML configuration to configure logs into two or more files:
<log4net>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logs\log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %level %logger - %message%newline" />
</layout>
</appender>
<appender name="RollingLogFileAppender2" type="log4net.Appender.RollingFileAppender">
<file value="logs\log1.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %level %logger - %message%newline" />
</layout>
</appender>
<root>
<level value="All" />
<appender-ref ref="RollingLogFileAppender" />
</root>
<logger additivity="false" name="RollingLogFileAppender2">
<level value="All"/>
<appender-ref ref="RollingLogFileAppender2" />
</logger>
</log4net>
Above XML configuration logs into two different files. To get specific instance of logger programmatically:
ILog logger = log4net.LogManager.GetLogger ("RollingLogFileAppender2");
You can append two or more appender elements inside log4net root element for logging into multiples files.
More info about above XML configuration structure or which appender is best for your application, read details from below links:
https://logging.apache.org/log4net/release/manual/configuration.html https://logging.apache.org/log4net/release/sdk/index.html
What about 1.1E10, +1, -0, etc? Parsing all possible numbers is trickier than many people think. If you want to include as many numbers are possible you should use the to_number function in a PL/SQL function. From http://www.oracle-developer.net/content/utilities/is_number.sql:
CREATE OR REPLACE FUNCTION is_number (str_in IN VARCHAR2) RETURN NUMBER IS
n NUMBER;
BEGIN
n := TO_NUMBER(str_in);
RETURN 1;
EXCEPTION
WHEN VALUE_ERROR THEN
RETURN 0;
END;
/
start wget through socks5 proxy using tsocks:
sudo apt install tsocks
config tsocks
# vi /etc/tsocks.conf
server = 127.0.0.1
server_type = 5
server_port = 1080
tsocks wget http://url_to_get
Just window.location = "http://wherever.you.wanna.go.com/"
, or, for local links, window.location = "my_relative_link.html"
.
You can try it by typing it into your address bar as well, e.g. javascript: window.location = "http://www.google.com/"
.
Also note that the protocol part of the URL (http://
) is not optional for absolute links; omitting it will make javascript assume a relative link.
You probably want to assign the lastname
you are reading out here
lastname = sheet.cell(row=r, column=3).value
to something; currently the program just forgets it
you could do that two lines after, like so
unpaidMembers[name] = lastname, email
your program will still crash at the same place, because .items()
still won't give you 3-tuples but rather something that has this structure: (name, (lastname, email))
good news is, python can handle this
for name, (lastname, email) in unpaidMembers.items():
etc.
if you're dealing with the iOS5 upgrade, I found that for compiling a project written to target 4.3, I could just rename libz.1.2.3.dynlib in the Project Navigator to libz.1.2.5.dynlib and it compiled.
My iPhoneOS50SDK/usr/lib folder has no libz.1.2.3.dynlib--don't know whether it's a beta thing or just natural upgrade.
In relation to the original question I'd like to add to the accepted answer by Mohamed Mansour that there is also a way to make this work the other way around:
You can access other extension pages (i.e. options page, popup page) from within the background page/script with the chrome.extension.getViews()
call. As described here.
// overwrite the console object with the right one.
var optionsPage = ( chrome.extension.getViews()
&& (chrome.extension.getViews().length > 1) )
? chrome.extension.getViews()[1] : null;
// safety precaution.
if (optionsPage) {
var console = optionsPage.console;
}
For anyone else that may run into this issue, turns out that even if you include #!/usr/bin/env python3
at the beginning of your script, the shebang is ignored if the file isn't executable.
To determine whether or not your file is executable:
./filename.py
from the command line-bash: ./filename.py: Permission denied
, run chmod a+x filename.py
./filename.py
againIf you've included import sys; print(sys.version)
as Kevin suggested, you'll now see that the script is being interpreted by python3
Below code will break the foreach loop once the condition is met, below is the sample example
var array = [1,2,3,4,5];
var newArray = array.slice(0,array.length);
array.forEach(function(item,index){
//your breaking condition goes here example checking for value 2
if(item == 2){
array.length = array.indexOf(item);
}
})
array = newArray;
I followed the link to RFC1034 and read most of it and was surprised to see this:
The labels must follow the rules for ARPANET host names. They must start with a letter, end with a letter or digit, and have as interior characters only letters, digits, and hyphen. There are also some restrictions on the length. Labels must be 63 characters or less.
For clarification, a domain names are made up of labels which are separated by dots ".". This spec must be outdated because it doesn't mention the use of underscores. I can understand the confusion if anybody stumbles over this spec without knowing it is obsolete. It is obsolete, isn't it?
I followed the link to RFC2181 and read some of it. Especially where it pertains to the issue of what is an authoritative, or canonical, name and the issue of what makes a valid DNS label.
As posted earlier it states there's only a length restriction then to sum it up it reads:
(about names and valid labels)
These are already adequately specified, however the specifications seem to be sometimes ignored. We seek to reinforce the existing specifications.
Kind of leaves me wondering if "a length only restriction" is "adequate". Are we going to start seeing domain names like @#$%!! soon? Isn't the internet screwed up enough?
Zip archives are actually more a 'filesystem' with content metadata etc. See help(unzip)
for details. So to do what you sketch out above you need to
tempfile()
)download.file()
to fetch the file into the temp. fileunz()
to extract the target file from temp. fileunlink()
which in code (thanks for basic example, but this is simpler) looks like
temp <- tempfile()
download.file("http://www.newcl.org/data/zipfiles/a1.zip",temp)
data <- read.table(unz(temp, "a1.dat"))
unlink(temp)
Compressed (.z
) or gzipped (.gz
) or bzip2ed (.bz2
) files are just the file and those you can read directly from a connection. So get the data provider to use that instead :)
This should be faster and will preserve the original order:
seen = {}
new_list = [seen.setdefault(x, x) for x in my_list if x not in seen]
If you don't care about order, you can just:
new_list = list(set(my_list))
Try this one::
import urllib2
website='https://www.allyourmusic.com'
try:
response = urllib2.urlopen(website)
if response.code==200:
print("site exists!")
else:
print("site doesn't exists!")
except urllib2.HTTPError, e:
print(e.code)
except urllib2.URLError, e:
print(e.args)
When you cherry-pick, it creates a new commit with a new SHA. If you do:
git cherry-pick -x <sha>
then at least you'll get the commit message from the original commit appended to your new commit, along with the original SHA, which is very useful for tracking cherry-picks.
Technically, the way you have it worded, neither is correct, because the SOAP method's communication isn't secure, and the REST method didn't say anything about authenticating legitimate users.
HTTPS prevents attackers from eavesdropping on the communication between two systems. It also verifies that the host system (server) is actually the host system the user intends to access.
WS-Security prevents unauthorized applications (users) from accessing the system.
If a RESTful system has a way of authenticating users and a SOAP application with WS-Security is using HTTPS, then really both are secure. It's just a different way of presenting and accessing data.
The error is:
Can not deserialize instance of java.lang.String out of START_ARRAY token at [Source: line: 1, column: 1095] (through reference chain: JsonGen["platforms"])
In JSON, platforms
look like this:
"platforms": [
{
"platform": "iphone"
},
{
"platform": "ipad"
},
{
"platform": "android_phone"
},
{
"platform": "android_tablet"
}
]
So try change your pojo to something like this:
private List platforms;
public List getPlatforms(){
return this.platforms;
}
public void setPlatforms(List platforms){
this.platforms = platforms;
}
EDIT: you will need change mobile_networks
too. Will look like this:
private List mobile_networks;
public List getMobile_networks() {
return mobile_networks;
}
public void setMobile_networks(List mobile_networks) {
this.mobile_networks = mobile_networks;
}
foreach (var element in instanceOfAClassThatImplelemntIEnumerable)
{
}
Go to File> Project Structure (or press Ctrl+Alt+Shift+S), A popup will open now go to SDK Location Tab you will find JDK Location there refer this image to be more clear.
SET @table = 'the_table';
SELECT GROUP_CONCAT(IF(COLUMN_NAME IN ('id'), 0, CONCAT("\`", COLUMN_NAME, "\`"))) FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = @table INTO @columns;
SET @s = CONCAT('INSERT INTO ', @table, ' SELECT ', @columns,' FROM ', @table, ' WHERE id=1');
PREPARE stmt FROM @s;
EXECUTE stmt;
Sounds like you really want a Dictionary<int, string>
or possibly a switch
statement...
You can do it with the conditional operator though:
userType = user.Type == 0 ? "Admin"
: user.Type == 1 ? "User"
: user.Type == 2 ? "Employee"
: "The default you didn't specify";
While you could put that in one line, I'd strongly urge you not to.
I would normally only do this for different conditions though - not just several different possible values, which is better handled in a map.
You're after the UPDATE FROM
syntax.
UPDATE
table T1
SET
column1 = T2.column1
FROM
table T2
INNER JOIN table T3 USING (column2)
WHERE
T1.column2 = T2.column2;
References
Use this code
Environment.Exit(0);
use 0 as the int if you don't want to return anything.
Using @Tarkus's answer, here are the regexes I used in R:
getColNames <- function(conn, tableName) {
x <- dbGetQuery( conn, paste0("SELECT sql FROM sqlite_master WHERE tbl_name = '",tableName,"' AND type = 'table'") )[1,1]
x <- str_split(x,"\\n")[[1]][-1]
x <- sub("[()]","",x)
res <- gsub( '"',"",str_extract( x[1], '".+"' ) )
x <- x[-1]
x <- x[-length(x)]
res <- c( res, gsub( "\\t", "", str_extract( x, "\\t[0-9a-zA-Z_]+" ) ) )
res
}
Code is somewhat sloppy, but it appears to work.
When you want to create a new line or wrap in your TextArea you have to add \n (newline) after the text.
TextArea t = new TextArea();
t.setText("insert text when you want a new line add \nThen more text....);
setBounds();
setFont();
add(t);
This is the only way I was able to do it, maybe there is a simpler way but I havent discovered that yet.
This topic is really confusing with Pandas. Luckily, it has a relatively simple solution.
The problem is that it is not always clear whether data filtering operations (e.g. loc) return a copy or a view of the DataFrame. Further use of such filtered DataFrame could therefore be confusing.
The simple solution is (unless you need to work with very large sets of data):
Whenever you need to update any values, always make sure that you explicitly copy the DataFrame before the assignment.
df # Some DataFrame
df = df.loc[:, 0:2] # Some filtering (unsure whether a view or copy is returned)
df = df.copy() # Ensuring a copy is made
df[df["Name"] == "John"] = "Johny" # Assignment can be done now (no warning)
How about simple HTML5 tag embed?
<!DOCTYPE html>
<html>
<body>
<embed src="anim.swf">
</body>
</html>
This worked for me :
date -d '20121212 7 days'
date -d '12-DEC-2012 7 days'
date -d '2012-12-12 7 days'
date -d '2012-12-12 4:10:10PM 7 days'
date -d '2012-12-12 16:10:55 7 days'
then you can format output adding parameter '+%Y%m%d'
I am using Dot.Net Core 3.1 and did an search for
"Newtonsoft.Json.JsonSerializationException: Self referencing loop detected for property "
I am adding this to this question, as it will be an easy reference. You should use the following in the Startup.cs file:
services.AddControllers()
.AddNewtonsoftJson(options =>
{
// Use the default property (Pascal) casing
options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
});
Omitting the html
, head
, and body
tags is certainly allowed by the HTML specs. The underlying reason is that browsers have always sought to be consistent with existing web pages, and the very early versions of HTML didn't define those elements. When HTML 2.0 first did, it was done in a way that the tags would be inferred when missing.
I often find it convenient to omit the tags when prototyping and especially when writing test cases as it helps keep the mark-up focused on the test in question. The inference process should create the elements in exactly the manner that you see in Firebug, and browsers are pretty consistent in doing that.
But...
IE has at least one known bug in this area. Even IE9 exhibits this. Suppose the markup is this:
<!DOCTYPE html>
<title>Test case</title>
<form action='#'>
<input name="var1">
</form>
You should (and do in other browsers) get a DOM that looks like this:
HTML
HEAD
TITLE
BODY
FORM action="#"
INPUT name="var1"
But in IE you get this:
HTML
HEAD
TITLE
FORM action="#"
BODY
INPUT name="var1"
BODY
This bug seems limited to the form
start tag preceding any text content and any body
start tag.
In my experience, using System.gc() is effectively a platform-specific form of optimization (where "platform" is the combination of hardware architecture, OS, JVM version and possible more runtime parameters such as RAM available), because its behaviour, while roughly predictable on a specific platform, can (and will) vary considerably between platforms.
Yes, there are situations where System.gc() will improve (perceived) performance. On example is if delays are tolerable in some parts of your app, but not in others (the game example cited above, where you want GC to happen at the start of a level, not during the level).
However, whether it will help or hurt (or do nothing) is highly dependent on the platform (as defined above).
So I think it is valid as a last-resort platform-specific optimization (i.e. if other performance optimizations are not enough). But you should never call it just because you believe it might help(without specific benchmarks), because chances are it will not.
If anyone using bootstrap 4 and looking for equal height columns just use row-eq-height
to parent div
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet" />_x000D_
<div class="row row-eq-height">_x000D_
<div class="col-xs-4" style="border: 1px solid grey;">.row.row-eq-height > .col-xs-4</div>_x000D_
<div class="col-xs-4" style="border: 1px solid grey;">.row.row-eq-height > .col-xs-4<br>this is<br>a much<br>taller<br>column<br>than the others</div>_x000D_
<div class="col-xs-4" style="border: 1px solid grey;">.row.row-eq-height > .col-xs-4</div>_x000D_
</div>
_x000D_
Ref: http://getbootstrap.com.vn/examples/equal-height-columns/
You have two ways to fix this. The preferred way is to use:
string answer;
(instead of char
). The other possible way to fix it is:
if (answer == 'y') ...
(note single quotes instead of double, representing a char
constant).
You can do the same on document ready
event like below
<script>
$(document).ready(function(){
var number = 112;
$("yourClass/Element/id...").html(number);
// $("yourClass/Element/id...").text(number);
});
</script>
or you can simply do it using document.write(number);
.
add or remove fragment in viewpager dynamically.
Call setupViewPager(viewPager) on activity start. To load different fragment call setupViewPagerCustom(viewPager). e.g. on button click call: setupViewPagerCustom(viewPager);
private void setupViewPager(ViewPager viewPager)
{
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new fragmnet1(), "HOME");
adapter.addFrag(new fragmnet2(), "SERVICES");
viewPager.setAdapter(adapter);
}
private void setupViewPagerCustom(ViewPager viewPager)
{
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new fragmnet3(), "Contact us");
adapter.addFrag(new fragmnet4(), "ABOUT US");
viewPager.setAdapter(adapter);
}
//Viewpageradapter, handles the views
static class ViewPagerAdapter extends FragmentStatePagerAdapter
{
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager){
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
@Override
public int getItemPosition(Object object){
return PagerAdapter.POSITION_NONE;
}
public void addFrag(Fragment fragment, String title){
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
@Override
public CharSequence getPageTitle(int position){
return mFragmentTitleList.get(position);
}
}
The original example returns an error because the array is created empty, then you try to access the nth element to assign it a value.
The are a number of creative answers here, many I didn't know before reading this post. All are fine for a small array, but as n0rd points out, there are significant differences in performance.
Here I use Measure-Command to find out how long each initialization takes. As you might guess, any approach that uses an explicit PowerShell loop is slower than those that use .Net constructors or PowerShell operators (which would be compiled in IL or native code).
New-Object
and @(somevalue)*n
are fast (around 20k ticks for 100k elements). n..m
is 10x slower (200k ticks). Add()
method is 1000x slower than the baseline (20M ticks), as is looping through an already-sized array using for()
or ForEach-Object
(a.k.a. foreach
,%
). +=
is the worst (2M ticks for just 1000 elements). Overall, I'd say array*n is "best" because:
(1..10)*10 -join " "
or ('one',2,3)*3
)The only drawback:
But keep in mind that for many cases where you would want to initialize the array elements to some value, then a strongly-typed array is exactly what you need. If you're initializing everything to $false
, then is the array ever going to hold anything other than $false
or $true
? If not, then New-Object type[] n
is the "best" approach.
Create and size a default array, then assign values:
PS> Measure-Command -Expression {$a = new-object object[] 100000} | Format-List -Property "Ticks"
Ticks : 20039
PS> Measure-Command -Expression {for($i=0; $i -lt $a.Length;$i++) {$a[$i] = $false}} | Format-List -Property "Ticks"
Ticks : 28866028
Creating an array of Boolean is bit little slower than and array of Object:
PS> Measure-Command -Expression {$a = New-Object bool[] 100000} | Format-List -Property "Ticks"
Ticks : 130968
It's not obvious what this does, the documentation for New-Object just says that the second parameter is an argument list which is passed to the .Net object constructor. In the case of arrays, the parameter evidently is the desired size.
Appending with +=
PS> $a=@()
PS> Measure-Command -Expression { for ($i=0; $i -lt 100000; $i++) {$a+=$false} } | Format-List -Property "Ticks"
I got tired of waiting for that to complete, so ctrl+c then:
PS> $a=@()
PS> Measure-Command -Expression { for ($i=0; $i -lt 100; $i++) {$a+=$false} } | Format-List -Property "Ticks"
Ticks : 147663
PS> $a=@()
PS> Measure-Command -Expression { for ($i=0; $i -lt 1000; $i++) {$a+=$false} } | Format-List -Property "Ticks"
Ticks : 2194398
Just as (6 * 3) is conceptually similar to (6 + 6 + 6), so ($somearray * 3) ought to give the same result as ($somearray + $somearray + $somearray). But with arrays, + is concatenation rather than addition.
If $array+=$element is slow, you might expect $array*$n to also be slow, but it's not:
PS> Measure-Command -Expression { $a = @($false) * 100000 } | Format-List -Property "Ticks"
Ticks : 20131
Just like Java has a StringBuilder class to avoid creating multiple objects when appending, so it seems PowerShell has an ArrayList.
PS> $al = New-Object System.Collections.ArrayList
PS> Measure-Command -Expression { for($i=0; $i -lt 1000; $i++) {$al.Add($false)} } | Format-List -Property "Ticks"
Ticks : 447133
PS> $al = New-Object System.Collections.ArrayList
PS> Measure-Command -Expression { for($i=0; $i -lt 10000; $i++) {$al.Add($false)} } | Format-List -Property "Ticks"
Ticks : 2097498
PS> $al = New-Object System.Collections.ArrayList
PS> Measure-Command -Expression { for($i=0; $i -lt 100000; $i++) {$al.Add($false)} } | Format-List -Property "Ticks"
Ticks : 19866894
Range operator, and Where-Object
loop:
PS> Measure-Command -Expression { $a = 1..100000 } | Format-List -Property "Ticks"
Ticks : 239863
Measure-Command -Expression { $a | % {$false} } | Format-List -Property "Ticks"
Ticks : 102298091
Notes:
$a=$null
).Thanks to @halr9000 for array*n, @Scott Saad and Lee Desmond for New-Object, and @EBGreen for ArrayList.
Thanks to @n0rd for getting me to think about performance.
import queue
is lowercase q
in Python 3.
Change Q
to q
and it will be fine.
(See code in https://stackoverflow.com/a/29688081/632951 for smart switching.)
Some of the core differences between C# and Javascript script syntax in Unity.
http://unity3d.com/learn/tutorials/modules/beginner/scripting/c-sharp-vs-javascript-syntax
but keep in mind C# is the best one to develop in unity
There is a hasClass function
if($('#popup p').hasClass('filled-text'))
With condition HAVING you will eliminate data with cash not ultrapass 0 if you want, generating more efficiency in your query.
SELECT SUM(cash) AS money FROM Table t1, Table2 t2 WHERE t1.branch = t2.branch
AND t1.transID = t2.transID
AND ValueDate > @startMonthDate HAVING money > 0;
If all of these rows are related and you need to alter the tabular data ... why not just wrap the entire table in a form, and change GET to POST (unless you know that you're not going to be sending more than the max amount of data a GET request can send).
I cannot wrap the entire table in a form, because some input fields of each row are input type="file" and files may be large. When the user submits the form, I want to POST only fields of current row, not all fields of the all rows which may have unneeded huge files, causing form to submit very slowly.
So, I tried incorrect nesting: tr/form and form/tr. However, it works only when one does not try to add new inputs dynamically into the form. Dynamically added inputs will not belong to incorrectly nested form, thus won't get submitted. (valid form/table dynamically inputs are submitted just fine).
Nesting div[display:table]/form/div[display:table-row]/div[display:table-cell] produced non-uniform widths of grid columns. I managed to get uniform layout when I replaced div[display:table-row] to form[display:table-row] :
div.grid {
display: table;
}
div.grid > form {
display: table-row;
div.grid > form > div {
display: table-cell;
}
div.grid > form > div.head {
text-align: center;
font-weight: 800;
}
For the layout to be displayed correctly in IE8:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
...
<meta http-equiv="X-UA-Compatible" content="IE=8, IE=9, IE=10" />
Sample of output:
<div class="grid" id="htmlrow_grid_item">
<form>
<div class="head">Title</div>
<div class="head">Price</div>
<div class="head">Description</div>
<div class="head">Images</div>
<div class="head">Stock left</div>
<div class="head">Action</div>
</form>
<form action="/index.php" enctype="multipart/form-data" method="post">
<div title="Title"><input required="required" class="input_varchar" name="add_title" type="text" value="" /></div>
It would be much harder to make this code work in IE6/7, however.
If your class is non-activity class, and creating an instance of it from the activiy, you can pass an instance of context via constructor of the later as follows:
class YourNonActivityClass{
// variable to hold context
private Context context;
//save the context recievied via constructor in a local variable
public YourNonActivityClass(Context context){
this.context=context;
}
}
You can create instance of this class from the activity as follows:
new YourNonActivityClass(this);
You should use NSIntegers if you need to compare them against constant values such as NSNotFound or NSIntegerMax, as these values will differ on 32-bit and 64-bit systems, so index values, counts and the like: use NSInteger or NSUInteger.
It doesn't hurt to use NSInteger in most circumstances, excepting that it takes up twice as much memory. The memory impact is very small, but if you have a huge amount of numbers floating around at any one time, it might make a difference to use ints.
If you DO use NSInteger or NSUInteger, you will want to cast them into long integers or unsigned long integers when using format strings, as new Xcode feature returns a warning if you try and log out an NSInteger as if it had a known length. You should similarly be careful when sending them to variables or arguments that are typed as ints, since you may lose some precision in the process.
On the whole, if you're not expecting to have hundreds of thousands of them in memory at once, it's easier to use NSInteger than constantly worry about the difference between the two.
The simplest thing you can do is cherry picking a range. It does the same as the rebase --onto
but is easier for the eyes :)
git cherry-pick quickfix1..quickfix2
You could use the static StartupPath property of the Application class.
So you can do it like this, but the limitation with the Parcelables is that the payload between activities has to be less than 1MB total. It's usually better to save the Bitmap to a file and pass the URI to the image to the next activity.
protected void onCreate(Bundle savedInstanceState) { setContentView(R.layout.my_layout); Bitmap bitmap = getIntent().getParcelableExtra("image"); ImageView imageView = (ImageView) findViewById(R.id.imageview); imageView.setImageBitmap(bitmap); }
In your code behind, set the window's DataContext to the dictionary. In your XAML, you can write:
<ListView ItemsSource="{Binding}" />
This will bind the ListView to the dictionary.
For more complex scenarios, this would be a subset of techniques behind the MVVM pattern.
<td style="word-break:break-all;">longtextwithoutspace</td>
or
<span style="word-break:break-all;">longtextwithoutspace</span>
Cross posting my answer from this SO question for another simple, pip version proof solution.
try: # for pip >= 10
from pip._internal.req import parse_requirements
from pip._internal.download import PipSession
except ImportError: # for pip <= 9.0.3
from pip.req import parse_requirements
from pip.download import PipSession
requirements = parse_requirements(os.path.join(os.path.dirname(__file__), 'requirements.txt'), session=PipSession())
if __name__ == '__main__':
setup(
...
install_requires=[str(requirement.req) for requirement in requirements],
...
)
Then just throw in all your requirements under requirements.txt
under project root directory.
You're not actually going out after the values. You would need to gather them like this:
var title = document.getElementById("title").value;
var name = document.getElementById("name").value;
var tickets = document.getElementById("tickets").value;
You could put all of these in one array:
var myArray = [ title, name, tickets ];
Or many arrays:
var titleArr = [ title ];
var nameArr = [ name ];
var ticketsArr = [ tickets ];
Or, if the arrays already exist, you can use their .push()
method to push new values onto it:
var titleArr = [];
function addTitle ( title ) {
titleArr.push( title );
console.log( "Titles: " + titleArr.join(", ") );
}
Your save button doesn't work because you refer to this.form
, however you don't have a form on the page. In order for this to work you would need to have <form>
tags wrapping your fields:
I've made several corrections, and placed the changes on jsbin: http://jsbin.com/ufanep/2/edit
The new form follows:
<form>
<h1>Please enter data</h1>
<input id="title" type="text" />
<input id="name" type="text" />
<input id="tickets" type="text" />
<input type="button" value="Save" onclick="insert()" />
<input type="button" value="Show data" onclick="show()" />
</form>
<div id="display"></div>
There is still some room for improvement, such as removing the onclick
attributes (those bindings should be done via JavaScript, but that's beyond the scope of this question).
I've also made some changes to your JavaScript. I start by creating three empty arrays:
var titles = [];
var names = [];
var tickets = [];
Now that we have these, we'll need references to our input fields.
var titleInput = document.getElementById("title");
var nameInput = document.getElementById("name");
var ticketInput = document.getElementById("tickets");
I'm also getting a reference to our message display box.
var messageBox = document.getElementById("display");
The insert()
function uses the references to each input field to get their value. It then uses the push()
method on the respective arrays to put the current value into the array.
Once it's done, it cals the clearAndShow()
function which is responsible for clearing these fields (making them ready for the next round of input), and showing the combined results of the three arrays.
function insert ( ) {
titles.push( titleInput.value );
names.push( nameInput.value );
tickets.push( ticketInput.value );
clearAndShow();
}
This function, as previously stated, starts by setting the .value
property of each input to an empty string. It then clears out the .innerHTML
of our message box. Lastly, it calls the join()
method on all of our arrays to convert their values into a comma-separated list of values. This resulting string is then passed into the message box.
function clearAndShow () {
titleInput.value = "";
nameInput.value = "";
ticketInput.value = "";
messageBox.innerHTML = "";
messageBox.innerHTML += "Titles: " + titles.join(", ") + "<br/>";
messageBox.innerHTML += "Names: " + names.join(", ") + "<br/>";
messageBox.innerHTML += "Tickets: " + tickets.join(", ");
}
The final result can be used online at http://jsbin.com/ufanep/2/edit
I wouldn't recommended this is you've got a lot of "thinking" in your app, but using XSLT could be better (and potentially faster with XSLT-to-bytecode compilation) than Java manipulation.
No, the powers that be at Google chose not to support that.
https://groups.google.com/forum/#!topic/golang-nuts/-5MCaivW0qQ
For the records: the official documentation, as for Spring Boot v1.2.0.RELEASE and Spring v4.1.3.RELEASE:
If the only change you need to make to logging is to set the levels of various loggers then you can do that in application.properties using the "logging.level" prefix, e.g.
logging.level.org.springframework.web: DEBUG
logging.level.org.hibernate: ERROR
You can also set the location of a file to log to (in addition to the console) using "logging.file".
To configure the more fine-grained settings of a logging system you need to use the native configuration format supported by the LoggingSystem in question. By default Spring Boot picks up the native configuration from its default location for the system (e.g. classpath:logback.xml for Logback), but you can set the location of the config file using the "logging.config" property.
Under some circumstances (if you get "ERROR 1064 (42000): You have an error in your SQL syntax;...") you need to do
ALTER TABLE mytable MODIFY mytable.mycolumn varchar(255);
Sounds like you're overextending regex for this purpose. What I would do is use a regex to match a few date formats and then use a separate function to validate the values of the date fields so extracted.
You can also use split
and join
:
"Sonic Free Games".split(" ").join("-").toLowerCase(); //sonic-free-games
<?php
$con = mysql_connect("server.com","user","pswd");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("db", $con);
$result = mysql_query("select count(1) FROM table");
$row = mysql_fetch_array($result);
$total = $row[0];
echo "Total rows: " . $total;
mysql_close($con);
?>
The script I use is quite similar; I post it here as an example of how to use the email.* modules to generate MIME messages; so this script can be easily modified to attach pictures, etc.
I rely on my ISP to add the date time header.
My ISP requires me to use a secure smtp connection to send mail, I rely on the smtplib module (downloadable at http://www1.cs.columbia.edu/~db2501/ssmtplib.py)
As in your script, the username and password, (given dummy values below), used to authenticate on the SMTP server, are in plain text in the source. This is a security weakness; but the best alternative depends on how careful you need (want?) to be about protecting these.
=======================================
#! /usr/local/bin/python
SMTPserver = 'smtp.att.yahoo.com'
sender = 'me@my_email_domain.net'
destination = ['recipient@her_email_domain.com']
USERNAME = "USER_NAME_FOR_INTERNET_SERVICE_PROVIDER"
PASSWORD = "PASSWORD_INTERNET_SERVICE_PROVIDER"
# typical values for text_subtype are plain, html, xml
text_subtype = 'plain'
content="""\
Test message
"""
subject="Sent from Python"
import sys
import os
import re
from smtplib import SMTP_SSL as SMTP # this invokes the secure SMTP protocol (port 465, uses SSL)
# from smtplib import SMTP # use this for standard SMTP protocol (port 25, no encryption)
# old version
# from email.MIMEText import MIMEText
from email.mime.text import MIMEText
try:
msg = MIMEText(content, text_subtype)
msg['Subject']= subject
msg['From'] = sender # some SMTP servers will do this automatically, not all
conn = SMTP(SMTPserver)
conn.set_debuglevel(False)
conn.login(USERNAME, PASSWORD)
try:
conn.sendmail(sender, destination, msg.as_string())
finally:
conn.quit()
except:
sys.exit( "mail failed; %s" % "CUSTOM_ERROR" ) # give an error message
I found a way around it using tuckey's urlrewritefilter. Please feel free to give a better answer if you have one!
In web.xml:
<filter>
<filter-name>UrlRewriteFilter</filter-name>
<filter-class>org.tuckey.web.filters.urlrewrite.UrlRewriteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>UrlRewriteFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>app</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>app</servlet-name>
<url-pattern>/app/*</url-pattern>
</servlet-mapping>
In urlrewrite.xml:
<urlrewrite default-match-type="wildcard">
<rule>
<from>/</from>
<to>/app/</to>
</rule>
<rule match-type="regex">
<from>^([^\.]+)$</from>
<to>/app/$1</to>
</rule>
<outbound-rule>
<from>/app/**</from>
<to>/$1</to>
</outbound-rule>
This means that any uri with a '.' in it (like style.css for example) won't be re-written.
Free and easy method:
If your target user base is not large(less than a 1000) and you want a free service to start with, then Airbop is the best and most convenient.
Airbop Website It uses Google Cloud Messaging service through its API and is provides a good performance. i have used it for two of my projects and it was easy implementing it.
Services like and Urbanship are excellent but provide an entire deployment stack and not just the push notifications thing.
If only push service is your target, Airbop will work fine.
I haven't used Pushwoosh, but is also a great choice. It allows push to 1,000,000 devices for free
A useful alternative answer to the first question, using the examples from tomeedee’s answer, would be to use numpy’s vstack and column_stack methods:
Given a matrix p,
>>> import numpy as np
>>> p = np.array([ [1,2] , [3,4] ])
an augmented matrix can be generated by:
>>> p = np.vstack( [ p , [5 , 6] ] )
>>> p = np.column_stack( [ p , [ 7 , 8 , 9 ] ] )
>>> p
array([[1, 2, 7],
[3, 4, 8],
[5, 6, 9]])
These methods may be convenient in practice than np.append() as they allow 1D arrays to be appended to a matrix without any modification, in contrast to the following scenario:
>>> p = np.array([ [ 1 , 2 ] , [ 3 , 4 ] , [ 5 , 6 ] ] )
>>> p = np.append( p , [ 7 , 8 , 9 ] , 1 )
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python2.6/dist-packages/numpy/lib/function_base.py", line 3234, in append
return concatenate((arr, values), axis=axis)
ValueError: arrays must have same number of dimensions
In answer to the second question, a nice way to remove rows and columns is to use logical array indexing as follows:
Given a matrix p,
>>> p = np.arange( 20 ).reshape( ( 4 , 5 ) )
suppose we want to remove row 1 and column 2:
>>> r , c = 1 , 2
>>> p = p [ np.arange( p.shape[0] ) != r , : ]
>>> p = p [ : , np.arange( p.shape[1] ) != c ]
>>> p
array([[ 0, 1, 3, 4],
[10, 11, 13, 14],
[15, 16, 18, 19]])
Note - for reformed Matlab users - if you wanted to do these in a one-liner you need to index twice:
>>> p = np.arange( 20 ).reshape( ( 4 , 5 ) )
>>> p = p [ np.arange( p.shape[0] ) != r , : ] [ : , np.arange( p.shape[1] ) != c ]
This technique can also be extended to remove sets of rows and columns, so if we wanted to remove rows 0 & 2 and columns 1, 2 & 3 we could use numpy's setdiff1d function to generate the desired logical index:
>>> p = np.arange( 20 ).reshape( ( 4 , 5 ) )
>>> r = [ 0 , 2 ]
>>> c = [ 1 , 2 , 3 ]
>>> p = p [ np.setdiff1d( np.arange( p.shape[0] ), r ) , : ]
>>> p = p [ : , np.setdiff1d( np.arange( p.shape[1] ) , c ) ]
>>> p
array([[ 5, 9],
[15, 19]])
Annotation that binds a method parameter or method return value to a named model attribute, exposed to a web view.
public String add(@ModelAttribute("specified") Model model) {
...
}
Here is a more concise version of the accepted answer which avoids repeating the NoteProperty identifiers and the [pscustomobject]
-cast:
$myItems = ("Joe",32,"something about him"), ("Sue",29,"something about her")
| ForEach-Object {[pscustomobject]@{name = $_[0]; age = $_[1]; info = $_[2]}}
Result:
> $myItems
name age info
---- --- ----
Joe 32 something about him
Sue 29 something about her
If your page is refreshed on submitting - yes, but only through the querystring: http://www.bloggingdeveloper.com/post/JavaScript-QueryString-ParseGet-QueryString-with-Client-Side-JavaScript.aspx (You must use method "GET" then). Else, you can return its value from the php script.
Can you provide a link ? thanks I can take a look Most likely your css selector isnt strong enough or can you try
padding:0!important;
If the place you're gonna paste have no problem with pasting a table formating (like the browser URL bar), I think the easiest way is this:
Sheets(1).Range("A1000").Value = string
Sheets(1).Range("A1000").Copy
MsgBox "Paste before closing this dialog."
Sheets(1).Range("A1000").Value = ""
Getting into a non-password protected Java keystore and changing the password can be done with a help of Java programming language itself.
That article contains the code for that:
you need object notation
<section [ngClass]="{'class1':condition1, 'class2': condition2, 'class3':condition3}" >
ref: NgClass
You may also consider the following solution:
let sum = options.set0.concat(options.set1);
const codeHTML = '<ol>' + sum.reduce((html, item) => {
return html + "<li>" + item + "</li>";
}, "") + '</ol>';
document.querySelector("#list").innerHTML = codeHTML;
javascript:alert("Inspect Element On");
javascript:document.body.contentEditable = 'true';
document.designMode='on';
void 0;
javascript:alert(document.documentElement.innerHTML);
Highlight this and drag it to your bookmarks bar and click it when you wanna edit and view the current sites source code.
Based off your code, i created this Fiddle
You need to use
var cb = document.getElementsByName('field206451')[0];
var label = document.getElementsByName('label206451')[0];
if you want to use name attributes then you have to take the index since it is a list of items, not just a single one. Everything else worked good.
With the -atime, -ctime, and -mtime switches to find, you can get close to what you want to achieve.
It's possible to get this done using seaborn.lineplot()
but it involves some additional work of converting numpy arrays to pandas dataframe. Here's a complete example:
# imports
import seaborn as sns
import numpy as np
import pandas as pd
# inputs
In [41]: num = np.array([1, 2, 3, 4, 5])
In [42]: sqr = np.array([1, 4, 9, 16, 25])
# convert to pandas dataframe
In [43]: d = {'num': num, 'sqr': sqr}
In [44]: pdnumsqr = pd.DataFrame(d)
# plot using lineplot
In [45]: sns.set(style='darkgrid')
In [46]: sns.lineplot(x='num', y='sqr', data=pdnumsqr)
Out[46]: <matplotlib.axes._subplots.AxesSubplot at 0x7f583c05d0b8>
And we get the following plot:
Please not that, if you haven't installed git through Xcode or home-brew, you'll likely find the bash scripts haysclarks refers to in /Library/Developer/CommandLineTools/
, and not in /Applications/Xcode.app/Contents/Developer/
, thus making the lines to include within .bashrc the following:
if [ -f /Library/Developer/CommandLineTools/usr/share/git-core/git-completion.bash ]; then
. /Library/Developer/CommandLineTools/usr/share/git-core/git-completion.bash
fi
source /Library/Developer/CommandLineTools/usr/share/git-core/git-prompt.sh
You'll need those lines if you wish to use git-prompt as well. [1]: https://stackoverflow.com/a/20211241/4795986
I know that is a old question, but...
You can also use this in your class:
@Autowired
private HttpServletRequest context;
And this will provide the current instance of HttpServletRequest
for you use on your method.
:javascript
$(document).ready( function() {
$('body').addClass( 'test' );
} );
Docs: http://haml.info/docs/yardoc/file.REFERENCE.html#javascript-filter
A single listening port can accept more than one connection simultaneously.
There is a '64K' limit that is often cited, but that is per client per server port, and needs clarifying.
Each TCP/IP packet has basically four fields for addressing. These are:
source_ip source_port destination_ip destination_port
<----- client ------> <--------- server ------------>
Inside the TCP stack, these four fields are used as a compound key to match up packets to connections (e.g. file descriptors).
If a client has many connections to the same port on the same destination, then three of those fields will be the same - only source_port
varies to differentiate the different connections. Ports are 16-bit numbers, therefore the maximum number of connections any given client can have to any given host port is 64K.
However, multiple clients can each have up to 64K connections to some server's port, and if the server has multiple ports or either is multi-homed then you can multiply that further.
So the real limit is file descriptors. Each individual socket connection is given a file descriptor, so the limit is really the number of file descriptors that the system has been configured to allow and resources to handle. The maximum limit is typically up over 300K, but is configurable e.g. with sysctl.
The realistic limits being boasted about for normal boxes are around 80K for example single threaded Jabber messaging servers.
The inherit
value, when used, means that the value of the property is set to the value of the same property of the parent element. For the root element (in HTML documents, for the html
element) there is no parent element; by definition, the value used is the initial value of the property. The initial value is defined for each property in CSS specifications.
The font-family
property is special in the sense that the initial value is not fixed in the specification but defined to be browser-dependent. This means that the browser’s default font family is used. This value can be set by the user.
If there is a continuous chain of elements (in the sense of parent-child relationships) from the root element to the current element, all with font-family
set to inherit
or not set at all in any style sheet (which also causes inheritance), then the font is the browser default.
This is rather uninteresting, though. If you don’t set fonts at all, browsers defaults will be used. Your real problem might be different – you seem to be looking at the part of style sheets that constitute a browser style sheet. There are probably other, more interesting style sheets that affect the situation.
Something like this?
int[][] pixels = new int[w][h];
for( int i = 0; i < w; i++ )
for( int j = 0; j < h; j++ )
pixels[i][j] = img.getRGB( i, j );
data: JSON.stringify({ "objectnameOFcontroller": data, "Sel": $(th).val() }),
controller object name
There is a simple but practical solution.
As DSM said, tuples are immutable, but we know Lists are mutable. So if you change a tuple to a list, it will be mutable. Then you can delete the items by the condition, then after changing the type to a tuple again. That’s it.
Please look at the codes below:
tuplex = list(tuplex)
for x in tuplex:
if (condition):
tuplex.pop(tuplex.index(x))
tuplex = tuple(tuplex)
print(tuplex)
For example, the following procedure will delete all even numbers from a given tuple.
tuplex = (1, 2, 3, 4, 5, 6, 7, 8, 9)
tuplex = list(tuplex)
for x in tuplex:
if (x % 2 == 0):
tuplex.pop(tuplex.index(x))
tuplex = tuple(tuplex)
print(tuplex)
if you test the type of the last tuplex, you will find it is a tuple.
Finally, if you want to define an index counter as you did (i.e., n), you should initialize it before the loop, not in the loop.
The Unicode Byte Order Mark (BOM) FAQ provides a concise answer:
Q: How I should deal with BOMs?
A: Here are some guidelines to follow:
A particular protocol (e.g. Microsoft conventions for .txt files) may require use of the BOM on certain Unicode data streams, such as files. When you need to conform to such a protocol, use a BOM.
Some protocols allow optional BOMs in the case of untagged text. In those cases,
Where a text data stream is known to be plain text, but of unknown encoding, BOM can be used as a signature. If there is no BOM, the encoding could be anything.
Where a text data stream is known to be plain Unicode text (but not which endian), then BOM can be used as a signature. If there is no BOM, the text should be interpreted as big-endian.
Some byte oriented protocols expect ASCII characters at the beginning of a file. If UTF-8 is used with these protocols, use of the BOM as encoding form signature should be avoided.
Where the precise type of the data stream is known (e.g. Unicode big-endian or Unicode little-endian), the BOM should not be used. In particular, whenever a data stream is declared to be UTF-16BE, UTF-16LE, UTF-32BE or UTF-32LE a BOM must not be used.
I'd use absolute positioning:
#play_button {
position:absolute;
transition: .5s ease;
left: 202px;
top: 198px;
}
If you want to debug why not use console debug
window.console.debug(jsonObject);
I suggest you do:
<input type="button" value="button text" onclick="click()">
Hope this helps you!
I was deploying python Django framework when I got this error because I forget to put my app name web: gunicorn plaindjango.wsgi:application --log-file -
instead of plaindjango
// use new instead of malloc as using malloc leads to memory leaks `enter code here
int **adj_list = new int*[rowsize];
for(int i = 0; i < rowsize; ++i)
{
adj_list[i] = new int[colsize];
}
Since 2.3 version of Gson library the JsonArray class have a 'set' method.
Here's an simple example:
JsonArray array = new JsonArray();
array.add(new JsonPrimitive("Red"));
array.add(new JsonPrimitive("Green"));
array.add(new JsonPrimitive("Blue"));
array.remove(2);
array.set(0, new JsonPrimitive("Yelow"));
I had the same program, I hope this could help.
I your using Windows 7, open Command Prompt-> run as Administrator. register your <...>.dll.
Why run as Administrator, you can register your <...>.dll using the run at the Windows Start, but still your dll only run as user even your account is administrator.
Now you can add your <...>.dll at the Project->Add Reference->Browse
Thanks
OK, I've solved this with some help from ES support. Issue the following command to the API on all nodes (or the nodes you believe to be the cause of the problem):
curl -XPUT 'localhost:9200/<index>/_settings' \
-d '{"index.routing.allocation.disable_allocation": false}'
where <index>
is the index you believe to be the culprit. If you have no idea, just run this on all nodes:
curl -XPUT 'localhost:9200/_settings' \
-d '{"index.routing.allocation.disable_allocation": false}'
I also added this line to my yaml config and since then, any restarts of the server/service have been problem free. The shards re-allocated back immediately.
FWIW, to answer an oft sought after question, set MAX_HEAP_SIZE to 30G unless your machine has less than 60G RAM, in which case set it to half the available memory.
Here are two solutions:
Select count(columnname) as countofNotNulls, count(isnull(columnname,1))-count(columnname) AS Countofnulls from table name
OR
Select count(columnname) as countofNotNulls, count(*)-count(columnname) AS Countofnulls from table name
You can add your own css property for button size as follows:
.btn {
min-width: 250px;
}
There is already a solution provided which allows building a dictionary, (or nested dictionary for more complex data), but if you wish to build an object, then perhaps try 'ObjDict'. This gives much more control over the json to be created, for example retaining order, and allows building as an object which may be a preferred representation of your concept.
pip install objdict first.
from objdict import ObjDict
data = ObjDict()
data.key = 'value'
json_data = data.dumps()
A bit of a late entry - but hopefully still useful to someone out there:-
Here's a simplified snippet for sending an in-memory string as an email attachment (a CSV file in this particular case).
using (var stream = new MemoryStream())
using (var writer = new StreamWriter(stream)) // using UTF-8 encoding by default
using (var mailClient = new SmtpClient("localhost", 25))
using (var message = new MailMessage("[email protected]", "[email protected]", "Just testing", "See attachment..."))
{
writer.WriteLine("Comma,Seperated,Values,...");
writer.Flush();
stream.Position = 0; // read from the start of what was written
message.Attachments.Add(new Attachment(stream, "filename.csv", "text/csv"));
mailClient.Send(message);
}
The StreamWriter and underlying stream should not be disposed until after the message has been sent (to avoid ObjectDisposedException: Cannot access a closed Stream
).
In IntelliJ IDEA this happened to me when I imported a project that had been working fine and running with Java 1.7. I apparently hadn't notified IntelliJ that java 1.7 had been installed on my machine, and it wasn't finding my $JAVA_HOME
.
On a Mac, this is resolved by:
Right clicking on the module | Module Settings | Project
and adding the 1.7 SDK by selecting "New" in the Project SDK.
Then go to the main IntelliJ IDEA menu | Preferences | Maven | Runner
and select the correct JRE. In my case it updated correctly Use Project SDK, which was now 1.7.
I have build a small demo project on this you could have a look to it Link to project
Add %0D%0A
to any place you want to encode a line break on the URL.
%0D
is a carriage return character%0A
is a line break characterThis is the new line sequence on windows machines, though not the same on linux and macs, should work in both.
If you want a linebreak in actual javascript, use the \n
escape sequence.
onClick="parent.location='mailto:[email protected]?subject=Thanks for writing to me &body=I will get back to you soon.%0D%0AThanks and Regards%0D%0ASaurav Kumar'
It is a textual file that includes a description of the library.
It allows libtool
to create platform-independent names.
For example, libfoo
goes to:
Under Linux:
/lib/libfoo.so # Symlink to shared object
/lib/libfoo.so.1 # Symlink to shared object
/lib/libfoo.so.1.0.1 # Shared object
/lib/libfoo.a # Static library
/lib/libfoo.la # 'libtool' library
Under Cygwin:
/lib/libfoo.dll.a # Import library
/lib/libfoo.a # Static library
/lib/libfoo.la # libtool library
/bin/cygfoo_1.dll # DLL
Under Windows MinGW:
/lib/libfoo.dll.a # Import library
/lib/libfoo.a # Static library
/lib/libfoo.la # 'libtool' library
/bin/foo_1.dll # DLL
So libfoo.la
is the only file that is preserved between platforms by libtool
allowing to understand what happens with:
Without depending on a specific platform implementation of libraries.
You should add this import in your file:
import * as fetch from 'node-fetch';
And then, run this code to add the node-fetch
:
yarn add node-fetch
According to the docs (http://ca3.php.net/language.oop5.cloning):
$a = clone $b;
Besides grep
, you can also use other utilities such as awk
or sed
Here is a few examples. Let say you want to search for a string is
in the file named GPL
.
Your sample file
user@linux:~$ cat -n GPL
1 The GNU General Public License is a free, copyleft license for
2 The licenses for most software and other practical works are designed
3 the GNU General Public License is intended to guarantee your freedom to
4 GNU General Public License for most of our software;
user@linux:~$
1. grep
user@linux:~$ grep is GPL
The GNU General Public License is a free, copyleft license for
the GNU General Public License is intended to guarantee your freedom to
user@linux:~$
2. awk
user@linux:~$ awk /is/ GPL
The GNU General Public License is a free, copyleft license for
the GNU General Public License is intended to guarantee your freedom to
user@linux:~$
3. sed
user@linux:~$ sed -n '/is/p' GPL
The GNU General Public License is a free, copyleft license for
the GNU General Public License is intended to guarantee your freedom to
user@linux:~$
Hope this helps
In Python 2 you can avoid making a temporary copy of all the values by using the itervalues()
dictionary method, which returns an iterator of the dictionary's keys:
sum(d.itervalues())
In Python 3 you can just use d.values()
because that method was changed to do that (and itervalues()
was removed since it was no longer needed).
To make it easier to write version independent code which always iterates over the values of the dictionary's keys, a utility function can be helpful:
import sys
def itervalues(d):
return iter(getattr(d, ('itervalues', 'values')[sys.version_info[0]>2])())
sum(itervalues(d))
This is essentially what Benjamin Peterson's six
module does.
Based on Adam Sills answer above - here's a nice clean extensions method for Contains... :)
///----------------------------------------------------------------------
/// <summary>
/// Determines whether the specified list contains the matching string value
/// </summary>
/// <param name="list">The list.</param>
/// <param name="value">The value to match.</param>
/// <param name="ignoreCase">if set to <c>true</c> the case is ignored.</param>
/// <returns>
/// <c>true</c> if the specified list contais the matching string; otherwise, <c>false</c>.
/// </returns>
///----------------------------------------------------------------------
public static bool Contains(this List<string> list, string value, bool ignoreCase = false)
{
return ignoreCase ?
list.Any(s => s.Equals(value, StringComparison.OrdinalIgnoreCase)) :
list.Contains(value);
}
Setting Up the database
public class DatabaseHelper extends SQLiteOpenHelper {
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "database_name";
// Table Names
private static final String DB_TABLE = "table_image";
// column names
private static final String KEY_NAME = "image_name";
private static final String KEY_IMAGE = "image_data";
// Table create statement
private static final String CREATE_TABLE_IMAGE = "CREATE TABLE " + DB_TABLE + "("+
KEY_NAME + " TEXT," +
KEY_IMAGE + " BLOB);";
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
// creating table
db.execSQL(CREATE_TABLE_IMAGE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// on upgrade drop older tables
db.execSQL("DROP TABLE IF EXISTS " + DB_TABLE);
// create new table
onCreate(db);
}
}
Insert in the Database:
public void addEntry( String name, byte[] image) throws SQLiteException{
SQLiteDatabase database = this.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put(KEY_NAME, name);
cv.put(KEY_IMAGE, image);
database.insert( DB_TABLE, null, cv );
}
Retrieving data:
byte[] image = cursor.getBlob(1);
Note:
Below is an Utility class which I hope could help you:
public class DbBitmapUtility {
// convert from bitmap to byte array
public static byte[] getBytes(Bitmap bitmap) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0, stream);
return stream.toByteArray();
}
// convert from byte array to bitmap
public static Bitmap getImage(byte[] image) {
return BitmapFactory.decodeByteArray(image, 0, image.length);
}
}
Further reading
If you are not familiar how to insert and retrieve into a database, go through this tutorial.
mysqli:query()
returns a mysqli_result
object, which cannot be serialized into a string.
You need to fetch the results from the object. Here's how to do it.
Fetch a single row from the result and then access column index 0 or using an associative key. Use the null-coalescing operator in case no rows are present in the result.
$result = $con->query($tourquery); // or mysqli_query($con, $tourquery);
$tourresult = $result->fetch_array()[0] ?? '';
// OR
$tourresult = $result->fetch_array()['roomprice'] ?? '';
echo '<strong>Per room amount: </strong>'.$tourresult;
Use foreach
loop to iterate over the result and fetch each row one by one. You can access each column using the column name as an array index.
$result = $con->query($tourquery); // or mysqli_query($con, $tourquery);
foreach($result as $row) {
echo '<strong>Per room amount: </strong>'.$row['roomprice'];
}
Please visit this ODP site set up by oracle for Microsoft OracleClient Developers: http://www.oracle.com/technetwork/topics/dotnet/index-085703.html
Also below is a sample code that can get you started to call a stored procedure from C# to Oracle. PKG_COLLECTION.CSP_COLLECTION_HDR_SELECT is the stored procedure built on Oracle accepting parameters PUNIT, POFFICE, PRECEIPT_NBR and returning the result in T_CURSOR.
using Oracle.DataAccess;
using Oracle.DataAccess.Client;
public DataTable GetHeader_BySproc(string unit, string office, string receiptno)
{
using (OracleConnection cn = new OracleConnection(DatabaseHelper.GetConnectionString()))
{
OracleDataAdapter da = new OracleDataAdapter();
OracleCommand cmd = new OracleCommand();
cmd.Connection = cn;
cmd.InitialLONGFetchSize = 1000;
cmd.CommandText = DatabaseHelper.GetDBOwner() + "PKG_COLLECTION.CSP_COLLECTION_HDR_SELECT";
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("PUNIT", OracleDbType.Char).Value = unit;
cmd.Parameters.Add("POFFICE", OracleDbType.Char).Value = office;
cmd.Parameters.Add("PRECEIPT_NBR", OracleDbType.Int32).Value = receiptno;
cmd.Parameters.Add("T_CURSOR", OracleDbType.RefCursor).Direction = ParameterDirection.Output;
da.SelectCommand = cmd;
DataTable dt = new DataTable();
da.Fill(dt);
return dt;
}
}
Just browse up to your installation's directory and execute this file "pg_env.bat", so after go at bin folder and execute pgAdmin.exe. This must work no doubt!
I found the solution here
I had to create a action filter to override the default behaviour of MVC
Here is my exception class
class ValidationException : ApplicationException
{
public JsonResult exceptionDetails;
public ValidationException(JsonResult exceptionDetails)
{
this.exceptionDetails = exceptionDetails;
}
public ValidationException(string message) : base(message) { }
public ValidationException(string message, Exception inner) : base(message, inner) { }
protected ValidationException(
System.Runtime.Serialization.SerializationInfo info,
System.Runtime.Serialization.StreamingContext context)
: base(info, context) { }
}
Note that I have constructor which initializes my JSON. Here is the action filter
public class HandleUIExceptionAttribute : FilterAttribute, IExceptionFilter
{
public virtual void OnException(ExceptionContext filterContext)
{
if (filterContext == null)
{
throw new ArgumentNullException("filterContext");
}
if (filterContext.Exception != null)
{
filterContext.ExceptionHandled = true;
filterContext.HttpContext.Response.Clear();
filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
filterContext.HttpContext.Response.StatusCode = (int)System.Net.HttpStatusCode.InternalServerError;
filterContext.Result = ((ValidationException)filterContext.Exception).myJsonError;
}
}
Now that I have the action filter, I will decorate my controller with the filter attribute
[HandleUIException]
public JsonResult UpdateName(string objectToUpdate)
{
var response = myClient.ValidateObject(objectToUpdate);
if (response.errors.Length > 0)
throw new ValidationException(Json(response));
}
When the error is thrown the action filter which implements IExceptionFilter get called and I get back the Json on the client on error callback.
In order to read a csv in that doesn't have a header and for only certain columns you need to pass params header=None
and usecols=[3,6]
for the 4th and 7th columns:
df = pd.read_csv(file_path, header=None, usecols=[3,6])
See the docs
Look at the fiddle here for a quick answer
data-ng-attr-title="{{d.age > 5 ? 'My age is greater than threshold': ''}}"
This will also work.
@Bean
CommandLineRunner init (StudentRepo studentRepo){
return args -> {
// Adding two students objects
List<String> names = Arrays.asList("udara", "sampath");
names.forEach(name -> studentRepo.save(new Student(name)));
};
}
This article talks about modifying the EXIF data without the re-saving/re-compressing (and thus loss of information -- it actually uses a "trick"; there may be more direct libraries) required by the SetResolution
approach. This was found on a quick google search, but I wanted to point out that all you need to do is modify the stored EXIF data.
Also: .NET lib for EXIF modification and another SO question. Google owns when you know good search terms.
Let's say your text file is - file.txt, then run this command -
dos2unix file.txt
It converts the text file from dos to unix format.
I saw this usage in a script and thought it was a good substitute for invoking basename within a script.
oldIFS=$IFS
IFS=/
for basetool in $0 ; do : ; done
IFS=$oldIFS
...
this is a replacement for the code: basetool=$(basename $0)
Based on all the responses and CS231n notes, allow me to summarise:
def softmax(x, axis):
x -= np.max(x, axis=axis, keepdims=True)
return np.exp(x) / np.exp(x).sum(axis=axis, keepdims=True)
Usage:
x = np.array([[1, 0, 2,-1],
[2, 4, 6, 8],
[3, 2, 1, 0]])
softmax(x, axis=1).round(2)
Output:
array([[0.24, 0.09, 0.64, 0.03],
[0. , 0.02, 0.12, 0.86],
[0.64, 0.24, 0.09, 0.03]])
I would suggest to read up a bit on the syntax. See here.
if (dsnt<0.05) {
wilcox.test(distance[result=='nt'],distance[result=='t'],alternative=c("two.sided"),paired=TRUE)
} else if (dst<0.05) {
wilcox.test(distance[result=='nt'],distance[result=='t'],alternative=c("two.sided"),paired=TRUE)
} else
t.test(distance[result=='nt'],distance[result=='t'],alternative=c("two.sided"),paired=TRUE)
catch (Exception ex) { ... }
WILL catch RuntimeException.
Whatever you put in catch block will be caught as well as the subclasses of it.
You can use my script from CodePen by just wrapping all the content within a .levit-container DIV.
~function () {
function Smooth () {
this.$container = document.querySelector('.levit-container');
this.$placeholder = document.createElement('div');
}
Smooth.prototype.init = function () {
var instance = this;
setContainer.call(instance);
setPlaceholder.call(instance);
bindEvents.call(instance);
}
function bindEvents () {
window.addEventListener('scroll', handleScroll.bind(this), false);
}
function setContainer () {
var style = this.$container.style;
style.position = 'fixed';
style.width = '100%';
style.top = '0';
style.left = '0';
style.transition = '0.5s ease-out';
}
function setPlaceholder () {
var instance = this,
$container = instance.$container,
$placeholder = instance.$placeholder;
$placeholder.setAttribute('class', 'levit-placeholder');
$placeholder.style.height = $container.offsetHeight + 'px';
document.body.insertBefore($placeholder, $container);
}
function handleScroll () {
this.$container.style.transform = 'translateZ(0) translateY(' + (window.scrollY * (- 1)) + 'px)';
}
var smooth = new Smooth();
smooth.init();
}();
Create a .htaccess file in the images folder and add this
<IfModule mod_rewrite.c>
RewriteEngine On
# directory browsing
Options All +Indexes
</IfModule>
you can put this Options All -Indexes
in the project file .htaccess
,file to deny direct access to other folders.
This does what you want
Although it's not really clear to me what you're trying to achieve, I spotted an obvious error in your code:
Field.get()
expects the object which contains the field as argument, not some (possible) value of that field. So you should have field.get(object)
.
Since you appear to be looking for the field value, you can obtain that as:
Object objectValue = field.get(object);
No need to instantiate the field type and create some empty/default value; or maybe there's something I missed.
I dont know if this will work for you, it works for me just fine.
Create a method for the Date/Time picker dialog.
private DatePickerDialog.OnDateSetListener datePickerListener = new DatePickerDialog.OnDateSetListener() {
// when dialog box is called, below method will be called.
// The arguments will be working to get the Day of Week to show it in a special TextView for it.
public void onDateSet(DatePicker view, int selectedYear,
int selectedMonth, int selectedDay) {
String year1 = String.valueOf(selectedYear);
String month1 = String.valueOf(selectedMonth + 1);
String day1 = String.valueOf(selectedDay);
delivDate.setText(month1 + "/" + day1 + "/" + year1);
delivDay.setText(DateFormat.format("EEEE", new Date(selectedYear, selectedMonth, selectedDay - 1)).toString());
}
};
and then, wherever you want you can do it just like this
public void setDateOnClick (View view) {
Calendar cal = Calendar.getInstance();
DatePickerDialog datePicker = new DatePickerDialog(this, datePickerListener,
cal.get(Calendar.YEAR),
cal.get(Calendar.MONTH),
cal.get(Calendar.DAY_OF_MONTH));
//Create a cancel button and set the title of the dialog.
datePicker.setCancelable(false);
datePicker.setTitle("Select the date");
datePicker.show();
}
hope you find this as your solution.
Procedure example:
Create PROCEDURE SP_Name
@UserName nvarchar(200),
@Password nvarchar(200)
AS
BEGIN
DECLARE @loginID int
--Statements for this Store Proc
--
--
--
--execute second store procedure
--below line calling sencond Store Procedure Exec is used for execute Store Procedure.
**Exec SP_Name_2 @params** (if any)
END
For a side note, I personally use [Foo new]
if I want something in init to be done without using it's return value anywhere. If you do not use the return of [[Foo alloc] init]
anywhere then you will get a warning. More or less, I use [Foo new]
for eye candy.
Subscribing to the IUS Community Project Repository
cd ~
curl 'https://setup.ius.io/' -o setup-ius.sh
Run the script:
sudo bash setup-ius.sh
Upgrading mod_php with Apache
This section describes the upgrade process for a system using Apache as the web server and mod_php to execute PHP code. If, instead, you are running Nginx and PHP-FPM, skip ahead to the next section.
Begin by removing existing PHP packages. Press y and hit Enter to continue when prompted.
sudo yum remove php-cli mod_php php-common
Install the new PHP 7 packages from IUS. Again, press y and Enter when prompted.
sudo yum install mod_php70u php70u-cli php70u-mysqlnd
Finally, restart Apache to load the new version of mod_php:
sudo apachectl restart
You can check on the status of Apache, which is managed by the httpd systemd unit, using systemctl:
systemctl status httpd
if i click table name its shown all fields about table. i did table field to show. but i need to know click function.
My Code:
$sql = "SHOW tables from database_name where tables_in_databasename not like '%tablename' and tables_in_databasename not like '%tablename%'";
$result=mysqli_query($cons,$sql);
$count = 0;
$array = array();
while ($row = mysqli_fetch_assoc($result)) {
$count++;
$tbody_txt .= '<tr>';
foreach ($row as $key => $value) {
if($count == '1') {
$thead_txt .='<td>'.$key.'</td>';
}
$tbody_txt .='<td>'.$value.'</td>';
$array[$key][] = $value;
}
}?>
document.title was not working for me.
Here is another way to do it using JQuery
$('html head').find('title').text("My New Page Title");
Try this code
public class WiFiDemo extends Activity implements OnClickListener
{
WifiManager wifi;
ListView lv;
TextView textStatus;
Button buttonScan;
int size = 0;
List<ScanResult> results;
String ITEM_KEY = "key";
ArrayList<HashMap<String, String>> arraylist = new ArrayList<HashMap<String, String>>();
SimpleAdapter adapter;
/* Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
textStatus = (TextView) findViewById(R.id.textStatus);
buttonScan = (Button) findViewById(R.id.buttonScan);
buttonScan.setOnClickListener(this);
lv = (ListView)findViewById(R.id.list);
wifi = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
if (wifi.isWifiEnabled() == false)
{
Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
wifi.setWifiEnabled(true);
}
this.adapter = new SimpleAdapter(WiFiDemo.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.list_value });
lv.setAdapter(this.adapter);
registerReceiver(new BroadcastReceiver()
{
@Override
public void onReceive(Context c, Intent intent)
{
results = wifi.getScanResults();
size = results.size();
}
}, new IntentFilter(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION));
}
public void onClick(View view)
{
arraylist.clear();
wifi.startScan();
Toast.makeText(this, "Scanning...." + size, Toast.LENGTH_SHORT).show();
try
{
size = size - 1;
while (size >= 0)
{
HashMap<String, String> item = new HashMap<String, String>();
item.put(ITEM_KEY, results.get(size).SSID + " " + results.get(size).capabilities);
arraylist.add(item);
size--;
adapter.notifyDataSetChanged();
}
}
catch (Exception e)
{ }
}
}
WiFiDemo.xml :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal">
<TextView
android:id="@+id/textStatus"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Status" />
<Button
android:id="@+id/buttonScan"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:text="Scan" />
</LinearLayout>
<ListView
android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="20dp"></ListView>
</LinearLayout>
For ListView- row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="8dp">
<TextView
android:id="@+id/list_value"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="14dp" />
</LinearLayout>
Add these permission in AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
OK, placeholders behave differently in different browsers, so you need using browser prefix in your CSS to make them identical, for example Firefox gives a transparency to placeholder by default, so need to add opacity 1 to your css, plus the color, it's not a big concern most of the times, but good to have them consistent:
*::-webkit-input-placeholder { /* WebKit browsers */
color: #ccc;
}
*:-moz-placeholder { /* Mozilla Firefox <18 */
color: #ccc;
opacity: 1;
}
*::-moz-placeholder { /* Mozilla Firefox 19+ */
color: #ccc;
opacity: 1;
}
*:-ms-input-placeholder { /* Internet Explorer 10-11 */
color: #ccc;
}
For me the solution was besides using "Ntlm" as credential type, similar as Jeroen K's solution. If I had the permission level I would plus on his post, but let me post my whole code here, which will support both Windows and other credential types like basic auth:
XxxSoapClient xxxClient = new XxxSoapClient();
ApplyCredentials(userName, password, xxxClient.ClientCredentials);
private static void ApplyCredentials(string userName, string password, ClientCredentials clientCredentials)
{
clientCredentials.UserName.UserName = userName;
clientCredentials.UserName.Password = password;
clientCredentials.Windows.ClientCredential.UserName = userName;
clientCredentials.Windows.ClientCredential.Password = password;
clientCredentials.Windows.AllowNtlm = true;
clientCredentials.Windows.AllowedImpersonationLevel = System.Security.Principal.TokenImpersonationLevel.Impersonation;
}
For those using google tag manager to integrate with google analytics events you can do what the guys mentioned about to set the cookies flag to none from GTM it self
open GTM > variables > google analytics variables > and set the cookies tag to none
Use the NSNumber method intValue
Here is Apple reference documentation
You can use unequal comparison -ne
instead of -eq
:
wget -q --tries=10 --timeout=20 --spider http://google.com
if [[ $? -ne 0 ]]; then
echo "Sorry you are Offline"
exit 1
fi
man regex.h
reports there is no manual entry for regex.h, but man 3 regex
gives you a page explaining the POSIX functions for pattern matching.
The same functions are described in The GNU C Library: Regular Expression Matching, which explains that the GNU C Library supports both the POSIX.2 interface and the interface the GNU C Library has had for many years.
For example, for an hypothetical program that prints which of the strings passed as argument match the pattern passed as first argument, you could use code similar to the following one.
#include <errno.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void print_regerror (int errcode, size_t length, regex_t *compiled);
int
main (int argc, char *argv[])
{
regex_t regex;
int result;
if (argc < 3)
{
// The number of passed arguments is lower than the number of
// expected arguments.
fputs ("Missing command line arguments\n", stderr);
return EXIT_FAILURE;
}
result = regcomp (®ex, argv[1], REG_EXTENDED);
if (result)
{
// Any value different from 0 means it was not possible to
// compile the regular expression, either for memory problems
// or problems with the regular expression syntax.
if (result == REG_ESPACE)
fprintf (stderr, "%s\n", strerror(ENOMEM));
else
fputs ("Syntax error in the regular expression passed as first argument\n", stderr);
return EXIT_FAILURE;
}
for (int i = 2; i < argc; i++)
{
result = regexec (®ex, argv[i], 0, NULL, 0);
if (!result)
{
printf ("'%s' matches the regular expression\n", argv[i]);
}
else if (result == REG_NOMATCH)
{
printf ("'%s' doesn't the regular expression\n", argv[i]);
}
else
{
// The function returned an error; print the string
// describing it.
// Get the size of the buffer required for the error message.
size_t length = regerror (result, ®ex, NULL, 0);
print_regerror (result, length, ®ex);
return EXIT_FAILURE;
}
}
/* Free the memory allocated from regcomp(). */
regfree (®ex);
return EXIT_SUCCESS;
}
void
print_regerror (int errcode, size_t length, regex_t *compiled)
{
char buffer[length];
(void) regerror (errcode, compiled, buffer, length);
fprintf(stderr, "Regex match failed: %s\n", buffer);
}
The last argument of regcomp()
needs to be at least REG_EXTENDED
, or the functions will use basic regular expressions, which means that (for example) you would need to use a\{3\}
instead of a{3}
used from extended regular expressions, which is probably what you expect to use.
POSIX.2 has also another function for wildcard matching: fnmatch()
. It doesn't allow to compile the regular expression, or get the substrings matching a sub-expression, but it is very specific for checking when a filename match a wildcard (e.g. it uses the FNM_PATHNAME
flag).
If you need this in derived classes, you can put that code in the base class:
protected string GetThisClassName() { return this.GetType().Name; }
Then, you can reach the name in the derived class. Returns derived class name. Of course, when using the new keyword "nameof", there will be no need like this variety acts.
Besides you can define this:
public static class Extension
{
public static string NameOf(this object o)
{
return o.GetType().Name;
}
}
And then use like this:
public class MyProgram
{
string thisClassName;
public MyProgram()
{
this.thisClassName = this.NameOf();
}
}
UPDATE tobeupdated
INNER JOIN original ON (tobeupdated.value = original.value)
SET tobeupdated.id = original.id
That should do it, and really its doing exactly what yours is. However, I prefer 'JOIN' syntax for joins rather than multiple 'WHERE' conditions, I think its easier to read
As for running slow, how large are the tables? You should have indexes on tobeupdated.value
and original.value
EDIT: we can also simplify the query
UPDATE tobeupdated
INNER JOIN original USING (value)
SET tobeupdated.id = original.id
USING
is shorthand when both tables of a join have an identical named key
such as id
. ie an equi-join - http://en.wikipedia.org/wiki/Join_(SQL)#Equi-join
Try using the css properties min and max as a workaround
For example:
width: min(50vw, 200px);
means the width will be the smallest of the two values.
width: max(50vw, 200px);
means the width will be the larger of the two values.
More details here:
It is possible
You just also need to apply the color to 'tbody' element as that's the table body that's been causing our trouble by peeking underneath.table, tbody, tr, th, td{
background-color: rgba(0, 0, 0, 0.0) !important;
}
In my case it was getting install at a different python dist_package (python 3.5) whereas I was using python 3.6, so the below helped:
python -m pip install pyspark
Depending on the length of the wanted loop, maybe even a more "template-driven" solution:
<ul>
<li *ngFor="let index of [0,1,2,3,4,5]">
{{ index }}
</li>
</ul>
C++14
std::string great = "Hello"s + " World"; // concatenation easy!
Answer on the question:
auto fname = ""s + name + ".txt";
I'll answer this anyway. Just in case someone needs it.
An activity that watches for notifications for the event named "custom-event-name"
.
@Override
public void onCreate(Bundle savedInstanceState) {
...
// Register to receive messages.
// We are registering an observer (mMessageReceiver) to receive Intents
// with actions named "custom-event-name".
LocalBroadcastManager.getInstance(this).registerReceiver(mMessageReceiver,
new IntentFilter("custom-event-name"));
}
// Our handler for received Intents. This will be called whenever an Intent
// with an action named "custom-event-name" is broadcasted.
private BroadcastReceiver mMessageReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// Get extra data included in the Intent
String message = intent.getStringExtra("message");
Log.d("receiver", "Got message: " + message);
}
};
@Override
protected void onDestroy() {
// Unregister since the activity is about to be closed.
LocalBroadcastManager.getInstance(this).unregisterReceiver(mMessageReceiver);
super.onDestroy();
}
The second activity that sends/broadcasts notifications.
@Override
public void onCreate(Bundle savedInstanceState) {
...
// Every time a button is clicked, we want to broadcast a notification.
findViewById(R.id.button_send).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
sendMessage();
}
});
}
// Send an Intent with an action named "custom-event-name". The Intent sent should
// be received by the ReceiverActivity.
private void sendMessage() {
Log.d("sender", "Broadcasting message");
Intent intent = new Intent("custom-event-name");
// You can also include some extra data.
intent.putExtra("message", "This is my message!");
LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
}
With the code above, every time the button R.id.button_send
is clicked, an Intent is broadcasted and is received by mMessageReceiver
in ReceiverActivity
.
The debug output should look like this:
01-16 10:35:42.413: D/sender(356): Broadcasting message
01-16 10:35:42.421: D/receiver(356): Got message: This is my message!
try
block will execute a sensitive code which can throw exceptionscatch
block will be used whenever an exception (of the type caught) is thrown in the try blockfinally
block is called in every case after the try/catch blocks. Even if the exception isn't caught or if your previous blocks break the execution flow.throw
keyword will allow you to throw an exception (which will break the execution flow and can be caught in a catch
block).throws
keyword in the method prototype is used to specify that your method might throw exceptions of the specified type. It's useful when you have checked exception (exception that you have to handle) that you don't want to catch in your current method.Resources :
On another note, you should really accept some answers. If anyone encounter the same problems as you and find your questions, he/she will be happy to directly see the right answer to the question.
If you try joining C on a field from B before joining B, i.e.:
SELECT A.x,
A.y,
A.z
FROM A
INNER JOIN C
on B.x = C.x
INNER JOIN B
on A.x = B.x
your query will fail, so in this case the order matters.
Here is the sample code to mock log, irrespective of the version used for junit or sping, springboot.
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.core.Appender;
import org.mockito.ArgumentMatcher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.junit.Test;
import static org.mockito.Matchers.argThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public class MyTest {
private static Logger logger = LoggerFactory.getLogger(MyTest.class);
@Test
public void testSomething() {
ch.qos.logback.classic.Logger root = (ch.qos.logback.classic.Logger) LoggerFactory.getLogger(ch.qos.logback.classic.Logger.ROOT_LOGGER_NAME);
final Appender mockAppender = mock(Appender.class);
when(mockAppender.getName()).thenReturn("MOCK");
root.addAppender(mockAppender);
//... do whatever you need to trigger the log
verify(mockAppender).doAppend(argThat(new ArgumentMatcher() {
@Override
public boolean matches(final Object argument) {
return ((LoggingEvent)argument).getFormattedMessage().contains("Hey this is the message I want to see");
}
}));
}
}
"py -m pip install requests" works fine with Windows and its up gradation. Just change the path after installing Python 3.4 in the command prompt and type in "py -m pip install requests"command prompt. pip install
Liam's link looks great, but also check out pandas.Timedelta
- looks like it plays nicely with NumPy's and Python's time deltas.
https://pandas.pydata.org/pandas-docs/stable/timedeltas.html
pd.date_range('2014-01-01', periods=10) + pd.Timedelta(days=1)
You would use a Shape Drawable as the layout's background and set its cornerRadius. Check this blog for a detailed tutorial
Project Settings > Under "Targets", select your project > Build Phases > open "Compile Sources" and "Copy Bundle Resources". Check if any files are listed in red color. If so , just delete it. Then clean and run.
Worked for me.
In the endpoint tag you need to include the property address=""
<endpoint address="" binding="webHttpBinding" bindingConfiguration="SecureBasicRest" behaviorConfiguration="svcEndpoint" name="webHttp" contract="SvcContract.Authenticate" />
Just use the array of options, to see, which option is currently selected.
$options = array( 'one', 'two', 'three' );
$output = '';
for( $i=0; $i<count($options); $i++ ) {
$output .= '<option '
. ( $_GET['sel'] == $options[$i] ? 'selected="selected"' : '' ) . '>'
. $options[$i]
. '</option>';
}
Sidenote: I would define a value to be some kind of id for each element, else you may run into problems, when two options have the same string representation.
It also works without jQuery if you do the following changes:
Add type="button"
to the edit button in order not to trigger submission of the form.
Change the name of your function from change()
to anything else.
Don't use hidden="hidden"
, use CSS instead: style="display: none;"
.
The following code works for me:
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="STYLESHEET" type="text/css" href="dba_style/buttons.css" />
<title>Untitled Document</title>
</head>
<script type="text/javascript">
function do_change(){
document.getElementById("save").style.display = "block";
document.getElementById("change").style.display = "block";
document.getElementById("cancel").style.display = "block";
}
</script>
<body>
<form name="form1" method="post" action="">
<div class="buttons">
<button type="button" class="regular" name="edit" id="edit" onclick="do_change(); return false;">
<img src="dba_images/textfield_key.png" alt=""/>
Edit
</button>
<button type="submit" class="positive" name="save" id="save" style="display:none;">
<img src="dba_images/apply2.png" alt=""/>
Save
</button>
<button class="regular" name="change" id="change" style="display:none;">
<img src="dba_images/textfield_key.png" alt=""/>
change
</button>
<button class="negative" name="cancel" id="cancel" style="display:none;">
<img src="dba_images/cross.png" alt=""/>
Cancel
</button>
</div>
</form>
</body>
</html>